Merge branch 'master' into pr-show-commitstaus-in-commits

2026-01-24 16:29:20 +01:00 · 2017-08-14 01:14:49 +09:00
parent 68d090f81a f18b83999a
commit 122ed1dd0f
243 changed files with 9261 additions and 1824 deletions
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,7 +1,8 @@
-# Guideline for Issues
+# The guidelines for contributing

- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues whether there is a same question or request in the past.
- If you can't find same question and report, send it to [gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
+- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues and pull requests whether there is a same request in the past.
+- The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles. If you don't wanna waste your time to make a pull request, ask us about your idea at [gitter room](https://gitter.im/gitbucket/gitbucket) before staring your work.
 - We can also support in Japanese other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
- Write an issue in English. At least, write subject in English.
- The highest priority of GitBucket is the ease of installation and API compatibility with GitHub, so your feature request might be rejected if they go against those principles.
+- You can edit the GitBucket documentation on Wiki if you have a GitHub account. When you find any mistakes or lacks in the documentation, please update it directly.
+- Write an issue, a pull request, commit messages and comments in source code in English.
+- All your contributions are handled as [Apache Software License, Version 2.0](https://github.com/gitbucket/gitbucket/blob/master/LICENSE). When you create a pull request or update the documentation, we assume you agreed this clause.
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -1,4 +1,4 @@
-### Before submitting an issue to Gitbucket I have first:
+### Before submitting an issue to GitBucket I have first:

 - [] read the [contribution guidelines](https://github.com/gitbucket/gitbucket/blob/master/.github/CONTRIBUTING.md)
 - [] searched for similar already existing issue
@@ -9,7 +9,7 @@
 ## Issue
 **Impacted version**: xxxx

-**Deployment mode**: *explain here how you use gitbucket : standalone app, under webcontainer (which one), with an http frontend (nginx, httpd, ...)*
+**Deployment mode**: *explain here how you use GitBucket : standalone app, under webcontainer (which one), with an http frontend (nginx, httpd, ...)*

 **Problem description**:
 - *be as explicit has you can*
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -1,4 +1,4 @@
-### Before submitting a pull-request to Gitbucket I have first:
+### Before submitting a pull-request to GitBucket I have first:

 - [] read the [contribution guidelines](https://github.com/gitbucket/gitbucket/blob/master/.github/CONTRIBUTING.md)
 - [] rebased my branch over master
--- a/.github/SUPPORT.md
+++ b/.github/SUPPORT.md
@@ -0,0 +1,6 @@
+# The support guidelines
+
+- At first, see [Wiki](https://github.com/gitbucket/gitbucket/wiki) and check issues whether there is a same question or request in the past.
+- If you can't find same question and report, send it to [gitter room](https://gitter.im/gitbucket/gitbucket) before raising an issue.
+- We can also support in Japanese other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
+- Write an issue in English. Since we can't support issues written in other languages, we close them forcibly.
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,8 @@ project/plugins/project/
 .classpath
 .project
 .cache
+.cache-main
+.cache-tests
 .settings

 # IntelliJ specific
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,12 +2,10 @@ language: scala
 sudo: true
 script:
  - sbt test
-jdk:
-  - oraclejdk8
 before_script:
-  - sudo apt-get install libaio1
  - sudo /etc/init.d/mysql stop
  - sudo /etc/init.d/postgresql stop
+  - sudo chmod +x /usr/local/bin/sbt
 cache:
  directories:
    - $HOME/.ivy2/cache
@@ -18,10 +16,25 @@ cache:
    - $HOME/.embedpostgresql
 matrix:
  include:
+  - jdk: oraclejdk8
+    addons:
+      apt:
+        packages:
+        - libaio1
  - dist: trusty
    group: edge
    sudo: required
    jdk: oraclejdk9
+    addons:
+      apt:
+        packages:
+        - libaio1
+    before_install:
+    - cd ~
+    - JDK9_URL=`curl http://jdk.java.net/9/ | grep "lin64JDK" | grep "tar.gz\"" | sed -e "s/\"/ /g" | awk '{print $5}'`
+    - wget -O jdk-9_linux-x64_bin.tar.gz $JDK9_URL
+    - tar -xzf jdk-9_linux-x64_bin.tar.gz
+    - cd -
    script:
    # https://github.com/sbt/sbt/pull/2951
    - git clone https://github.com/retronym/java9-rt-export
@@ -29,10 +42,12 @@ matrix:
    - git checkout 1019a2873d057dd7214f4135e84283695728395d
    - jdk_switcher use oraclejdk8
    - sbt package
-    - jdk_switcher use oraclejdk9
+#    - jdk_switcher use oraclejdk9
+    - export JAVA_HOME=~/jdk-9
+    - PATH=$JAVA_HOME/bin:$PATH
+    - java -version
    - mkdir -p $HOME/.sbt/0.13/java9-rt-ext; java -jar target/java9-rt-export-*.jar $HOME/.sbt/0.13/java9-rt-ext/rt.jar
    - jar tf $HOME/.sbt/0.13/java9-rt-ext/rt.jar | grep java/lang/Object
    - cd ..
-    - echo "sbt.version=0.13.14-RC1" > project/build.properties
    - wget https://raw.githubusercontent.com/paulp/sbt-extras/9ade5fa54914ca8aded44105bf4b9a60966f3ccd/sbt && chmod +x ./sbt
    - ./sbt -Dscala.ext.dirs=$HOME/.sbt/0.13/java9-rt-ext test
--- a/README.md
+++ b/README.md
@@ -38,9 +38,12 @@ You can specify following options:
 - `--host=[HOSTNAME]`
 - `--gitbucket.home=[DATA_DIR]`
 - `--temp_dir=[TEMP_DIR]`
+- `--max_file_size=[MAX_FILE_SIZE]`

 `TEMP_DIR` is used as the [temporary directory for the jetty application context](https://www.eclipse.org/jetty/documentation/9.3.x/ref-temporary-directories.html). This is the directory into which the `gitbucket.war` file is unpacked, the source files are compiled, etc. If given this parameter **must** match the path of an existing directory or the application will quit reporting an error; if not given the path used will be a `tmp` directory inside the gitbucket home.

+`MAX_FILE_SIZE` is the max file size for upload files.
+
 You can also deploy `gitbucket.war` to a servlet container which supports Servlet 3.0 (like Jetty, Tomcat, JBoss, etc)

 For more information about installation on Mac or Windows Server (with IIS), or configuration of Apache or Nginx and also integration with other tools or services such as Jenkins or Slack, see [Wiki](https://github.com/gitbucket/gitbucket/wiki).
@@ -54,8 +57,9 @@ GitBucket has a plug-in system that allows extra functionality. Officially the f
 - [gitbucket-gist-plugin](https://github.com/gitbucket/gitbucket-gist-plugin)
 - [gitbucket-emoji-plugin](https://github.com/gitbucket/gitbucket-emoji-plugin)
 - [gitbucket-pages-plugin](https://github.com/gitbucket/gitbucket-pages-plugin)
+- [gitbucket-notifications-plugin](https://github.com/gitbucket/gitbucket-notifications-plugin)

-You can find more plugins made by the community at [GitBucket community plugins](http://gitbucket-plugins.github.io/).
+You can find more plugins made by the community at [GitBucket community plugins](https://gitbucket-plugins.github.io/).

 Support
 --------
@@ -68,6 +72,35 @@ Support

 Release Notes
 -------------
+### 4.15.0 - 5 Aug 2017
+- Bundle GitBucket organization plugins
+- Notifications plugin
+- Plugin hot deployment
+- Update Slick to 3.2.1 from 3.2.0
+- Support ed25519 keys for SSH
+- Markdown preview in comment editing forms
+
+### 4.14.1 - 4 Jul 2017
+- Bug fix: Possibility of error in forking repository
+
+### 4.14 - 1 Jul 2017
+- Support priority in issues and pull requests
+- Show icons when the sidebar is collapsed
+- Support gollum events in web hook
+- Support account (user / group) level web hook
+- Add `--max_file_size` option
+- Configuration by system property or environment variable
+
+### 4.13 - 29 May 2017
+- Uploading files into the repository
+- HTML is available in Markdown
+- Added filter box to dropdown menus
+
+### 4.12 - 30 Apr 2017
+- [Gist plug-in](https://github.com/gitbucket/gitbucket-gist-plugin) provides JavaScript to embed snippet
+- Dropdown menu filter in the branch comparing page
+- Caution for the embedded H2 database
+
 ### 4.11 - 1 Apr 2017
 - Deploy keys support
 - Auto generate avatar images
--- a/build.sbt
+++ b/build.sbt
@@ -1,8 +1,8 @@
 val Organization = "io.github.gitbucket"
 val Name = "gitbucket"
-val GitBucketVersion = "4.11.0"
+val GitBucketVersion = "4.15.0"
 val ScalatraVersion = "2.5.0"
-val JettyVersion = "9.3.9.v20160517"
+val JettyVersion = "9.3.19.v20170502"

 lazy val root = (project in file(".")).enablePlugins(SbtTwirl, JettyPlugin)

@@ -10,7 +10,7 @@ sourcesInBase := false
 organization := Organization
 name := Name
 version := GitBucketVersion
-scalaVersion := "2.12.2"
+scalaVersion := "2.12.3"

 // dependency settings
 resolvers ++= Seq(
@@ -21,46 +21,48 @@ resolvers ++= Seq(
  "amateras-snapshot" at "http://amateras.sourceforge.jp/mvn-snapshot/"
 )
 libraryDependencies ++= Seq(
-  "org.eclipse.jgit"                %  "org.eclipse.jgit.http.server" % "4.7.0.201704051617-r",
-  "org.eclipse.jgit"                %  "org.eclipse.jgit.archive"     % "4.7.0.201704051617-r",
+  "org.eclipse.jgit"                %  "org.eclipse.jgit.http.server" % "4.8.0.201706111038-r",
+  "org.eclipse.jgit"                %  "org.eclipse.jgit.archive"     % "4.8.0.201706111038-r",
  "org.scalatra"                    %% "scalatra"                     % ScalatraVersion,
  "org.scalatra"                    %% "scalatra-json"                % ScalatraVersion,
-  "org.json4s"                      %% "json4s-jackson"               % "3.5.0",
+  "org.json4s"                      %% "json4s-jackson"               % "3.5.1",
  "io.github.gitbucket"             %% "scalatra-forms"               % "1.1.0",
-  "commons-io"                      %  "commons-io"                   % "2.4",
-  "io.github.gitbucket"             %  "solidbase"                    % "1.0.0",
-  "io.github.gitbucket"             %  "markedj"                      % "1.0.10",
-  "org.apache.commons"              %  "commons-compress"             % "1.11",
+  "commons-io"                      %  "commons-io"                   % "2.5",
+  "io.github.gitbucket"             %  "solidbase"                    % "1.0.2",
+  "io.github.gitbucket"             %  "markedj"                      % "1.0.14",
+  "org.apache.commons"              %  "commons-compress"             % "1.13",
  "org.apache.commons"              %  "commons-email"                % "1.4",
-  "org.apache.httpcomponents"       %  "httpclient"                   % "4.5.1",
-  "org.apache.sshd"                 %  "apache-sshd"                  % "1.2.0",
-  "org.apache.tika"                 %  "tika-core"                    % "1.13",
-  "com.github.takezoe"              %% "blocking-slick-32"            % "0.0.8",
-  "joda-time"                       %  "joda-time"                    % "2.9.6",
+  "org.apache.httpcomponents"       %  "httpclient"                   % "4.5.3",
+  "org.apache.sshd"                 %  "apache-sshd"                  % "1.4.0" exclude("org.slf4j","slf4j-jdk14"),
+  "org.apache.tika"                 %  "tika-core"                    % "1.14",
+  "com.github.takezoe"              %% "blocking-slick-32"            % "0.0.9",
+  "joda-time"                       %  "joda-time"                    % "2.9.9",
  "com.novell.ldap"                 %  "jldap"                        % "2009-10-07",
-  "com.h2database"                  %  "h2"                           % "1.4.192",
-  "mysql"                           %  "mysql-connector-java"         % "5.1.39",
-  "org.postgresql"                  %  "postgresql"                   % "9.4.1208",
-  "ch.qos.logback"                  %  "logback-classic"              % "1.1.7",
-  "com.zaxxer"                      %  "HikariCP"                     % "2.4.6",
-  "com.typesafe"                    %  "config"                       % "1.3.0",
-  "com.typesafe.akka"               %% "akka-actor"                   % "2.4.12",
+  "com.h2database"                  %  "h2"                           % "1.4.195",
+  "org.mariadb.jdbc"                %  "mariadb-java-client"          % "2.0.3",
+  "org.postgresql"                  %  "postgresql"                   % "42.0.0",
+  "ch.qos.logback"                  %  "logback-classic"              % "1.2.3",
+  "com.zaxxer"                      %  "HikariCP"                     % "2.6.1",
+  "com.typesafe"                    %  "config"                       % "1.3.1",
+  "com.typesafe.akka"               %% "akka-actor"                   % "2.5.0",
  "fr.brouillard.oss.security.xhub" %  "xhub4j-core"                  % "1.0.0",
  "com.github.bkromhout"            %  "java-diff-utils"              % "2.1.1",
  "org.cache2k"                     %  "cache2k-all"                  % "1.0.0.CR1",
  "com.enragedginger"               %% "akka-quartz-scheduler"        % "1.6.0-akka-2.4.x" exclude("c3p0","c3p0"),
  "net.coobird"                     %  "thumbnailator"                % "0.4.8",
+  "com.github.zafarkhaja"           %  "java-semver"                  % "0.9.0",
  "org.eclipse.jetty"               %  "jetty-webapp"                 % JettyVersion     % "provided",
  "javax.servlet"                   %  "javax.servlet-api"            % "3.1.0"          % "provided",
  "junit"                           %  "junit"                        % "4.12"           % "test",
  "org.scalatra"                    %% "scalatra-scalatest"           % ScalatraVersion  % "test",
-  "org.mockito"                     %  "mockito-core"                 % "2.7.16"         % "test",
+  "org.mockito"                     %  "mockito-core"                 % "2.7.22"         % "test",
  "com.wix"                         %  "wix-embedded-mysql"           % "2.1.4"          % "test",
-  "ru.yandex.qatools.embed"         %  "postgresql-embedded"          % "1.14"           % "test"
+  "ru.yandex.qatools.embed"         %  "postgresql-embedded"          % "2.0"            % "test",
+  "net.i2p.crypto"                  % "eddsa"                         % "0.1.0"
 )

 // Compiler settings
-scalacOptions := Seq("-deprecation", "-language:postfixOps")
+scalacOptions := Seq("-deprecation", "-language:postfixOps", "-opt:l:method")
 javacOptions in compile ++= Seq("-target", "8", "-source", "8")
 javaOptions in Jetty += "-Dlogback.configurationFile=/logback-dev.xml"

@@ -143,12 +145,28 @@ executableKey := {
    IO copyFile (classDir / name, temp / name)
  }

+  // include plugins
+  val pluginsDir = temp / "WEB-INF" / "classes" / "plugins"
+  IO createDirectory (pluginsDir)
+  IO copyFile(Keys.baseDirectory.value / "plugins.json", pluginsDir / "plugins.json")
+
+  val json = IO read(Keys.baseDirectory.value / "plugins.json")
+  PluginsJson.parse(json).foreach { case (plugin, version) =>
+    val url = if(plugin == "gitbucket-pages-plugin"){
+      s"https://github.com/gitbucket/${plugin}/releases/download/v${version}/${plugin}_${scalaBinaryVersion.value}-${version}.jar"
+    } else {
+      s"https://github.com/gitbucket/${plugin}/releases/download/${version}/${plugin}_${scalaBinaryVersion.value}-${version}.jar"
+    }
+    log info s"Download: ${url}"
+    IO download(new java.net.URL(url), pluginsDir / s"${plugin}_${scalaBinaryVersion.value}-${version}.jar")
+  }
+
  // zip it up
  IO delete (temp / "META-INF" / "MANIFEST.MF")
  val contentMappings   = (temp.*** --- PathFinder(temp)).get pair relativeTo(temp)
  val manifest          = new JarManifest
-  manifest.getMainAttributes put (AttrName.MANIFEST_VERSION,    "1.0")
-  manifest.getMainAttributes put (AttrName.MAIN_CLASS,          "JettyLauncher")
+  manifest.getMainAttributes put (AttrName.MANIFEST_VERSION, "1.0")
+  manifest.getMainAttributes put (AttrName.MAIN_CLASS,       "JettyLauncher")
  val outputFile    = workDir / warName
  IO jar (contentMappings, outputFile, manifest)

--- a/doc/how_to_run.md
+++ b/doc/how_to_run.md
@@ -1,6 +1,12 @@
 How to run from the source tree
 ========

+Install [sbt](http://www.scala-sbt.org/index.html) at first.
+
+```
+$ brew install sbt
+```
+
 Run for Development
 --------

--- a/doc/jrebel.md
+++ b/doc/jrebel.md
@@ -1,7 +1,7 @@
 JRebel integration (optional)
 =============================

-[JRebel](http://zeroturnaround.com/software/jrebel/) is a JVM plugin that makes developing web apps much faster.
+[JRebel](https://zeroturnaround.com/software/jrebel/) is a JVM plugin that makes developing web apps much faster.
 JRebel is generally able to eliminate the need for the following slow "app restart" in sbt following a code change:

 ```
@@ -22,12 +22,12 @@ Sign up for a [usage plan](https://my.jrebel.com/). You will need to create an a

 ## 2. Download JRebel

-Download the most recent ["nosetup" JRebel zip](http://zeroturnaround.com/software/jrebel/download/prev-releases/).
+Download the most recent ["nosetup" JRebel zip](https://zeroturnaround.com/software/jrebel/download/prev-releases/).
 Next, unzip the downloaded file.

 ## 3. Activate

-Follow the [instructions on the JRebel website](http://zeroturnaround.com/software/jrebel/download/prev-releases/) to activate your downloaded JRebel.
+Follow the [instructions on the JRebel website](https://zeroturnaround.com/software/jrebel/download/prev-releases/) to activate your downloaded JRebel.

 You can use the default settings for all the configurations.

--- a/doc/notification.md
+++ b/doc/notification.md
@@ -1,23 +0,0 @@
-Notification Email
-========
-
-GitBucket can send email notification to users if this feature is enabled by an administrator.
-
-The timing of the notification are as follows:
-
-##### at the issue registration (new issue, new pull request)
-When a record is saved into the ```ISSUE``` table, GitBucket does the notification.
-
-##### at the comment registration
-Among the records in the ```ISSUE_COMMENT``` table, them to be counted as a comment (i.e. the record ```ACTION``` column value is "comment" or "close_comment" or "reopen_comment") are saved, GitBucket does the notification.
-
-##### at the status update (close, reopen, merge)
-When the ```CLOSED``` column value is updated, GitBucket does the notification.
-
-Notified users are as follows:
-
-* individual repository's owner
-* collaborators
-* participants
-
-However, the person performing the operation is excluded from the notification.
--- a/doc/readme.md
+++ b/doc/readme.md
@@ -6,7 +6,6 @@ Developer's Guide
 * [Authentication in Controller](authenticator.md)
 * [About Action in Issue Comment](comment_action.md)
 * [Activity Types](activity.md)
- * [Notification Email](notification.md)
 * [Automatic Schema Updating](auto_update.md)
 * [Release Operation](release.md)
 * [JRebel integration (optional)](jrebel.md)
--- a/doc/release.md
+++ b/doc/release.md
@@ -34,8 +34,6 @@ object GitBucketCoreModule extends Module("gitbucket-core",
 Generate release files
 --------

-Note: Release operation requires [Ant](http://ant.apache.org/) and [Maven](https://maven.apache.org/).
-
 ### Make release war file

 Run `sbt executable`. The release war file and fingerprint are generated into `target/executable/gitbucket.war`.
@@ -52,4 +50,12 @@ For plug-in development, we have to publish the GitBucket jar file to the Maven
 $ sbt publish-signed
 ```

-Then operate release sequence at https://oss.sonatype.org/.
+Then logged-in https://oss.sonatype.org/ and delete following files from the staging repository:
+
+- gitbucket_2.12-x.x.x.war
+- gitbucket_2.12-x.x.x.war.asc
+- gitbucket_2.12-x.x.x.war.asc.md5
+- gitbucket_2.12-x.x.x.war.asc.sha1
+- gitbucket_2.12-x.x.x.war.md5
+
+At last, close and release the repository.
--- a/plugins.json
+++ b/plugins.json
@@ -0,0 +1,54 @@
+[
+  {
+    "id": "notifications",
+    "name": "Notifications Plugin",
+    "description": "Provides notifications feature on GitBucket.",
+    "versions": [
+      {
+        "version": "1.0.0",
+        "range": ">=4.15.0",
+        "file": "gitbucket-notifications-plugin_2.12-1.0.0.jar"
+      }
+    ],
+    "default": true
+  },
+  {
+    "id": "emoji",
+    "name": "Emoji Plugin",
+    "description": "Provides Emoji support for GitBucket.",
+    "versions": [
+      {
+        "version": "4.4.0",
+        "range": ">=4.10.0",
+        "file": "gitbucket-emoji-plugin_2.12-4.4.0.jar"
+      }
+    ],
+    "default": false
+  },
+  {
+    "id": "gist",
+    "name": "Gist Plugin",
+    "description": "Provides Gist feature on GitBucket.",
+    "versions": [
+      {
+        "version": "4.10.0",
+        "range": ">=4.15.0",
+        "file": "gitbucket-gist-plugin_2.12-4.10.0.jar"
+      }
+    ],
+    "default": false
+  },
+  {
+    "id": "pages",
+    "name": "Pages Plugin",
+    "description": "Project pages for gitbucket",
+    "versions": [
+      {
+        "version": "1.5.0",
+        "range": ">=4.15.0",
+        "file": "gitbucket-pages-plugin_2.12-1.5.0.jar"
+      }
+    ],
+    "default": false
+  }
+]
--- a/project/Checksums.scala
+++ b/project/Checksums.scala
@@ -1,7 +1,6 @@
-import java.security.MessageDigest;
+import java.security.MessageDigest
 import scala.annotation._
 import sbt._
-import sbt.Using._

 object Checksums {
  private val bufferSize = 2048
--- a/project/PluginsJson.scala
+++ b/project/PluginsJson.scala
@@ -0,0 +1,17 @@
+import com.eclipsesource.json.Json
+import scala.collection.JavaConverters._
+
+object PluginsJson {
+
+  def parse(json: String): Seq[(String, String)] = {
+    val value = Json.parse(json)
+    value.asArray.values.asScala.map { plugin =>
+      val obj = plugin.asObject.get("versions").asArray.asScala.head.asObject
+      val pluginName = obj.get("file").asString.split("_2.12-").head
+      val version = obj.get("version").asString
+      (pluginName, version)
+    }
+  }
+
+}
+
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.15
--- a/project/build.sbt
+++ b/project/build.sbt
@@ -0,0 +1 @@
+libraryDependencies += "com.eclipsesource.minimal-json" % "minimal-json" % "0.9.4"
--- a/sbt-launch-0.13.12.jar
+++ b/sbt-launch-0.13.12.jar
--- a/sbt.bat
+++ b/sbt.bat
@@ -1,2 +0,0 @@
-set SCRIPT_DIR=%~dp0
-java %JAVA_OPTS% -Dsbt.log.noformat=true -XX:+CMSClassUnloadingEnabled -Xmx512M -Xss2M -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005 -jar "%SCRIPT_DIR%\sbt-launch-0.13.12.jar" %*
--- a/sbt.sh
+++ b/sbt.sh
@@ -1,2 +0,0 @@
-#!/bin/sh
-java $JAVA_OPTS -Dsbt.log.noformat=true -XX:+CMSClassUnloadingEnabled -Xmx512M -Xss2M -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=5005 -jar `dirname $0`/sbt-launch-0.13.12.jar "$@"
--- a/src/main/java/JettyLauncher.java
+++ b/src/main/java/JettyLauncher.java
@@ -1,4 +1,9 @@
+import org.eclipse.jetty.server.ConnectionFactory;
+import org.eclipse.jetty.server.Connector;
+import org.eclipse.jetty.server.Handler;
+import org.eclipse.jetty.server.HttpConnectionFactory;
 import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.StatisticsHandler;
 import org.eclipse.jetty.webapp.WebAppContext;

 import java.io.File;
@@ -8,6 +13,8 @@ import java.security.ProtectionDomain;

 public class JettyLauncher {
    public static void main(String[] args) throws Exception {
+        System.setProperty("java.awt.headless", "true");
+
        String host = null;
        int port = 8080;
        InetSocketAddress address = null;
@@ -32,12 +39,21 @@ public class JettyLauncher {
                                contextPath = "/" + contextPath;
                            }
                            break;
+                        case "--max_file_size":
+                            System.setProperty("gitbucket.maxFileSize", dim[1]);
+                            break;
                        case "--gitbucket.home":
                            System.setProperty("gitbucket.home", dim[1]);
                            break;
                        case "--temp_dir":
                            tmpDirPath = dim[1];
                            break;
+                        case "--plugin_dir":
+                            System.setProperty("gitbucket.pluginDir", dim[1]);
+                            break;
+                        case "--validate_password":
+                            System.setProperty("gitbucket.validate.password", dim[1]);
+                            break;
                    }
                }
            }
@@ -60,6 +76,15 @@ public class JettyLauncher {
 //        connector.setPort(port);
 //        server.addConnector(connector);

+        // Disabling Server header
+        for (Connector connector : server.getConnectors()) {
+            for (ConnectionFactory factory : connector.getConnectionFactories()) {
+                if (factory instanceof HttpConnectionFactory) {
+                    ((HttpConnectionFactory) factory).getHttpConfiguration().setSendServerVersion(false);
+                }
+            }
+        }
+
        WebAppContext context = new WebAppContext();

        File tmpDir;
@@ -80,6 +105,9 @@ public class JettyLauncher {
        }
        context.setTempDirectory(tmpDir);

+        // Disabling the directory listing feature.
+        context.setInitParameter("org.eclipse.jetty.servlet.Default.dirAllowed", "false");
+
        ProtectionDomain domain = JettyLauncher.class.getProtectionDomain();
        URL location = domain.getCodeSource().getLocation();

@@ -91,7 +119,9 @@ public class JettyLauncher {
            context.setInitParameter("org.scalatra.ForceHttps", "true");
        }

-        server.setHandler(context);
+        Handler handler = addStatisticsHandler(context);
+
+        server.setHandler(handler);
        server.setStopAtShutdown(true);
        server.setStopTimeout(7_000);
        server.start();
@@ -110,14 +140,11 @@ public class JettyLauncher {
        return new File(System.getProperty("user.home"), ".gitbucket");
    }

-    private static void deleteDirectory(File dir){
-        for(File file: dir.listFiles()){
-            if(file.isFile()){
-                file.delete();
-            } else if(file.isDirectory()){
-                deleteDirectory(file);
-            }
-        }
-        dir.delete();
+    private static Handler addStatisticsHandler(Handler handler) {
+        // The graceful shutdown is implemented via the statistics handler.
+        // See the following: https://bugs.eclipse.org/bugs/show_bug.cgi?id=420142
+        final StatisticsHandler statisticsHandler = new StatisticsHandler();
+        statisticsHandler.setHandler(handler);
+        return statisticsHandler;
    }
 }
--- a/src/main/resources/update/gitbucket-core_4.14.sql
+++ b/src/main/resources/update/gitbucket-core_4.14.sql
@@ -0,0 +1,26 @@
+CREATE OR REPLACE VIEW ISSUE_OUTLINE_VIEW AS
+
+ SELECT
+   A.USER_NAME,
+   A.REPOSITORY_NAME,
+   A.ISSUE_ID,
+   COALESCE(B.COMMENT_COUNT, 0) + COALESCE(C.COMMENT_COUNT, 0) AS COMMENT_COUNT,
+   COALESCE(D.ORDERING, 9999) AS PRIORITY
+
+ FROM ISSUE A
+
+ LEFT OUTER JOIN (
+   SELECT USER_NAME, REPOSITORY_NAME, ISSUE_ID, COUNT(COMMENT_ID) AS COMMENT_COUNT FROM ISSUE_COMMENT
+   WHERE ACTION IN ('comment', 'close_comment', 'reopen_comment')
+   GROUP BY USER_NAME, REPOSITORY_NAME, ISSUE_ID
+ ) B
+ ON (A.USER_NAME = B.USER_NAME AND A.REPOSITORY_NAME = B.REPOSITORY_NAME AND A.ISSUE_ID = B.ISSUE_ID)
+
+ LEFT OUTER JOIN (
+   SELECT USER_NAME, REPOSITORY_NAME, ISSUE_ID, COUNT(COMMENT_ID) AS COMMENT_COUNT FROM COMMIT_COMMENT
+   GROUP BY USER_NAME, REPOSITORY_NAME, ISSUE_ID
+ ) C
+ ON (A.USER_NAME = C.USER_NAME AND A.REPOSITORY_NAME = C.REPOSITORY_NAME AND A.ISSUE_ID = C.ISSUE_ID)
+
+ LEFT OUTER JOIN PRIORITY D
+ ON (A.PRIORITY_ID = D.PRIORITY_ID);
--- a/src/main/resources/update/gitbucket-core_4.14.xml
+++ b/src/main/resources/update/gitbucket-core_4.14.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<changeSet>
+  <createTable tableName="PRIORITY">
+    <column name="USER_NAME" type="varchar(100)" nullable="false"/>
+    <column name="REPOSITORY_NAME" type="varchar(100)" nullable="false"/>
+    <column name="PRIORITY_ID" type="int" nullable="false" autoIncrement="true" unique="true"/>
+    <column name="PRIORITY_NAME" type="varchar(100)" nullable="false"/>
+    <column name="DESCRIPTION" type="varchar(255)" nullable="true"/>
+    <column name="ORDERING" type="int" nullable="false"/>
+    <column name="IS_DEFAULT" type="boolean" nullable="false"/>
+    <column name="COLOR" type="char(6)" nullable="false"/>
+  </createTable>
+
+  <addPrimaryKey constraintName="IDX_PRIORITY_PK" tableName="PRIORITY" columnNames="USER_NAME, REPOSITORY_NAME, PRIORITY_ID"/>
+  <addForeignKeyConstraint constraintName="IDX_PRIORITY_FK0" baseTableName="PRIORITY" baseColumnNames="USER_NAME, REPOSITORY_NAME" referencedTableName="REPOSITORY" referencedColumnNames="USER_NAME, REPOSITORY_NAME"/>
+
+  <addColumn tableName="ISSUE">
+    <column name="PRIORITY_ID" type="int" nullable="true" />
+  </addColumn>
+
+  <addForeignKeyConstraint constraintName="IDX_ISSUE_FK3" baseTableName="ISSUE" baseColumnNames="PRIORITY_ID" referencedTableName="PRIORITY" referencedColumnNames="PRIORITY_ID"/>
+
+  <createTable tableName="ACCOUNT_WEB_HOOK">
+    <column name="USER_NAME" type="varchar(100)" nullable="false"/>
+    <column name="URL" type="varchar(200)" nullable="false"/>
+    <column name="TOKEN" type="varchar(100)" nullable="true"/>
+    <column name="CTYPE" type="varchar(10)" nullable="true"/>
+  </createTable>
+
+  <addPrimaryKey constraintName="IDX_ACCOUNT_WEB_HOOK_PK" tableName="ACCOUNT_WEB_HOOK" columnNames="USER_NAME, URL"/>
+  <addForeignKeyConstraint constraintName="IDX_ACCOUNT_WEB_HOOK_FK0" baseTableName="ACCOUNT_WEB_HOOK" baseColumnNames="USER_NAME" referencedTableName="ACCOUNT" referencedColumnNames="USER_NAME"/>
+
+  <createTable tableName="ACCOUNT_WEB_HOOK_EVENT">
+    <column name="USER_NAME" type="varchar(100)" nullable="false"/>
+    <column name="URL" type="varchar(200)" nullable="false"/>
+    <column name="EVENT" type="varchar(30)" nullable="false"/>
+  </createTable>
+</changeSet>
--- a/src/main/scala/ScalatraBootstrap.scala
+++ b/src/main/scala/ScalatraBootstrap.scala
@@ -31,9 +31,8 @@ class ScalatraBootstrap extends LifeCycle with SystemSettingsService {
    // Register controllers
    context.mount(new AnonymousAccessController, "/*")

-    PluginRegistry().getControllers.foreach { case (controller, path) =>
-      context.mount(controller, path)
-    }
+    context.addFilter("pluginControllerFilter", new PluginControllerFilter)
+    context.getFilterRegistration("pluginControllerFilter").addMappingForUrlPatterns(EnumSet.allOf(classOf[DispatcherType]), true, "/*")

    context.mount(new IndexController, "/")
    context.mount(new ApiController, "/api/v3")
@@ -44,6 +43,7 @@ class ScalatraBootstrap extends LifeCycle with SystemSettingsService {
    context.mount(new RepositoryViewerController, "/*")
    context.mount(new WikiController, "/*")
    context.mount(new LabelsController, "/*")
+    context.mount(new PrioritiesController, "/*")
    context.mount(new MilestonesController, "/*")
    context.mount(new IssuesController, "/*")
    context.mount(new PullRequestsController, "/*")
--- a/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
+++ b/src/main/scala/gitbucket/core/GitBucketCoreModule.scala
@@ -31,5 +31,14 @@ object GitBucketCoreModule extends Module("gitbucket-core",
  new Version("4.10.0"),
  new Version("4.11.0",
    new LiquibaseMigration("update/gitbucket-core_4.11.xml")
-  )
+  ),
+  new Version("4.12.0"),
+  new Version("4.12.1"),
+  new Version("4.13.0"),
+  new Version("4.14.0",
+    new LiquibaseMigration("update/gitbucket-core_4.14.xml"),
+    new SqlMigration("update/gitbucket-core_4.14.sql")
+  ),
+  new Version("4.14.1"),
+  new Version("4.15.0")
 )
--- a/src/main/scala/gitbucket/core/api/ApiRepository.scala
+++ b/src/main/scala/gitbucket/core/api/ApiRepository.scala
@@ -37,7 +37,7 @@ object ApiRepository{
      name           = repository.repositoryName,
      full_name      = s"${repository.userName}/${repository.repositoryName}",
      description    = repository.description.getOrElse(""),
-      watchers       = 0,
+      watchers       = watchers,
      forks          = forkedCount,
      `private`      = repository.isPrivate,
      default_branch = repository.defaultBranch,
@@ -53,4 +53,14 @@ object ApiRepository{
  def forPushPayload(repositoryInfo: RepositoryInfo, owner: ApiUser): ApiRepository =
    ApiRepository(repositoryInfo.repository, owner, forkedCount=repositoryInfo.forkedCount, urlIsHtmlUrl=true)

+  def forDummyPayload(owner: ApiUser): ApiRepository =
+    ApiRepository(
+      name="dummy",
+      full_name=s"${owner.login}/dummy",
+      description="",
+      watchers=0,
+      forks=0,
+      `private`=false,
+      default_branch="master",
+      owner=owner)(true)
 }
--- a/src/main/scala/gitbucket/core/controller/AccountController.scala
+++ b/src/main/scala/gitbucket/core/controller/AccountController.scala
@@ -2,9 +2,10 @@ package gitbucket.core.controller

 import gitbucket.core.account.html
 import gitbucket.core.helper
-import gitbucket.core.model.{GroupMember, Role}
+import gitbucket.core.model.{AccountWebHook, GroupMember, RepositoryWebHook, RepositoryWebHookEvent, Role, WebHook, WebHookContentType}
 import gitbucket.core.plugin.PluginRegistry
 import gitbucket.core.service._
+import gitbucket.core.service.WebHookService._
 import gitbucket.core.ssh.SshUtil
 import gitbucket.core.util.SyntaxSugars._
 import gitbucket.core.util.Directory._
@@ -16,17 +17,16 @@ import org.apache.commons.io.FileUtils
 import org.scalatra.i18n.Messages
 import org.scalatra.BadRequest

-
 class AccountController extends AccountControllerBase
  with AccountService with RepositoryService with ActivityService with WikiService with LabelsService with SshKeyService
  with OneselfAuthenticator with UsersAuthenticator with GroupManagerAuthenticator with ReadableUsersAuthenticator
-  with AccessTokenService with WebHookService with RepositoryCreationService
+  with AccessTokenService with WebHookService with PrioritiesService with RepositoryCreationService


 trait AccountControllerBase extends AccountManagementControllerBase {
  self: AccountService with RepositoryService with ActivityService with WikiService with LabelsService with SshKeyService
    with OneselfAuthenticator with UsersAuthenticator with GroupManagerAuthenticator with ReadableUsersAuthenticator
-    with AccessTokenService with WebHookService with RepositoryCreationService =>
+    with AccessTokenService with WebHookService with PrioritiesService with RepositoryCreationService =>

  case class AccountNewForm(userName: String, password: String, fullName: String, mailAddress: String,
                            description: Option[String], url: Option[String], fileId: Option[String])
@@ -40,7 +40,7 @@ trait AccountControllerBase extends AccountManagementControllerBase {

  val newForm = mapping(
    "userName"    -> trim(label("User name"    , text(required, maxlength(100), identifier, uniqueUserName, reservedNames))),
-    "password"    -> trim(label("Password"     , text(required, maxlength(20)))),
+    "password"    -> trim(label("Password"     , text(required, maxlength(20), password))),
    "fullName"    -> trim(label("Full Name"    , text(required, maxlength(100)))),
    "mailAddress" -> trim(label("Mail Address" , text(required, maxlength(100), uniqueMailAddress()))),
    "description" -> trim(label("bio"          , optional(text()))),
@@ -49,7 +49,7 @@ trait AccountControllerBase extends AccountManagementControllerBase {
  )(AccountNewForm.apply)

  val editForm = mapping(
-    "password"    -> trim(label("Password"     , optional(text(maxlength(20))))),
+    "password"    -> trim(label("Password"     , optional(text(maxlength(20), password)))),
    "fullName"    -> trim(label("Full Name"    , text(required, maxlength(100)))),
    "mailAddress" -> trim(label("Mail Address" , text(required, maxlength(100), uniqueMailAddress("userName")))),
    "description" -> trim(label("bio"          , optional(text()))),
@@ -109,6 +109,47 @@ trait AccountControllerBase extends AccountManagementControllerBase {
    "account" -> trim(label("Group/User name", text(required, validAccountName)))
  )(AccountForm.apply)

+  // for account web hook url addition.
+  case class AccountWebHookForm(url: String, events: Set[WebHook.Event], ctype: WebHookContentType, token: Option[String])
+
+  def accountWebHookForm(update:Boolean) = mapping(
+    "url"    -> trim(label("url", text(required, accountWebHook(update)))),
+    "events" -> accountWebhookEvents,
+    "ctype" -> label("ctype", text()),
+    "token" -> optional(trim(label("token", text(maxlength(100)))))
+  )(
+    (url, events, ctype, token) => AccountWebHookForm(url, events, WebHookContentType.valueOf(ctype), token)
+  )
+  /**
+    * Provides duplication check for web hook url. duplicated from RepositorySettingsController.scala
+    */
+  private def accountWebHook(needExists: Boolean): Constraint = new Constraint(){
+    override def validate(name: String, value: String, messages: Messages): Option[String] =
+      if(getAccountWebHook(params("userName"), value).isDefined != needExists){
+        Some(if(needExists){
+          "URL had not been registered yet."
+        } else {
+          "URL had been registered already."
+        })
+      } else {
+        None
+      }
+  }
+
+  private def accountWebhookEvents = new ValueType[Set[WebHook.Event]]{
+    def convert(name: String, params: Map[String, String], messages: Messages): Set[WebHook.Event] = {
+      WebHook.Event.values.flatMap { t =>
+        params.get(name + "." + t.name).map(_ => t)
+      }.toSet
+    }
+    def validate(name: String, params: Map[String, String], messages: Messages): Seq[(String, String)] = if(convert(name,params,messages).isEmpty){
+      Seq(name -> messages("error.required").format(name))
+    } else {
+      Nil
+    }
+  }
+
+
  /**
   * Displays user information.
   */
@@ -191,6 +232,10 @@ trait AccountControllerBase extends AccountManagementControllerBase {
    } getOrElse NotFound()
  })

+  get("/captures/(.*)".r) {
+    multiParams("captures").head
+  }
+
  get("/:userName/_delete")(oneselfOnly {
    val userName = params("userName")

@@ -206,9 +251,13 @@ trait AccountControllerBase extends AccountManagementControllerBase {
 //        FileUtils.deleteDirectory(getWikiRepositoryDir(userName, repositoryName))
 //        FileUtils.deleteDirectory(getTemporaryDir(userName, repositoryName))
 //      }
-//      // Remove from GROUP_MEMBER, COLLABORATOR and REPOSITORY
+        // Remove from GROUP_MEMBER and COLLABORATOR
        removeUserRelatedData(userName)
        updateAccount(account.copy(isRemoved = true))
+
+        // call hooks
+        PluginRegistry().getAccountHooks.foreach(_.deleted(userName))
+
        session.invalidate
        redirect("/")
      }
@@ -269,6 +318,113 @@ trait AccountControllerBase extends AccountManagementControllerBase {
    redirect(s"/${userName}/_application")
  })

+  get("/:userName/_hooks")(oneselfOnly {
+    val userName = params("userName")
+    getAccountByUserName(userName).map { account =>
+      gitbucket.core.account.html.hooks(account, getAccountWebHooks(account.userName), flash.get("info"))
+    } getOrElse NotFound()
+  })
+
+  /**
+   * Display the account web hook edit page.
+   */
+  get("/:userName/_hooks/new")(oneselfOnly {
+    val userName = params("userName")
+    getAccountByUserName(userName).map { account =>
+      val webhook = AccountWebHook(userName, "", WebHookContentType.FORM, None)
+      html.edithook(webhook, Set(WebHook.Push), account, true)
+    } getOrElse NotFound()
+  })
+
+  /**
+   * Add the account web hook URL.
+   */
+  post("/:userName/_hooks/new", accountWebHookForm(false))(oneselfOnly { form =>
+    val userName = params("userName")
+    addAccountWebHook(userName, form.url, form.events, form.ctype, form.token)
+    flash += "info" -> s"Webhook ${form.url} created"
+    redirect(s"/${userName}/_hooks")
+  })
+
+  /**
+   * Delete the account web hook URL.
+   */
+  get("/:userName/_hooks/delete")(oneselfOnly {
+    val userName = params("userName")
+    deleteAccountWebHook(userName, params("url"))
+    flash += "info" -> s"Webhook ${params("url")} deleted"
+    redirect(s"/${userName}/_hooks")
+  })
+
+  /**
+   * Display the account web hook edit page.
+   */
+  get("/:userName/_hooks/edit")(oneselfOnly {
+    val userName = params("userName")
+    getAccountByUserName(userName).flatMap { account =>
+      getAccountWebHook(userName, params("url")).map { case (webhook, events) =>
+        html.edithook(webhook, events, account, false)
+      }
+    } getOrElse NotFound()
+  })
+
+  /**
+   * Update account web hook settings.
+   */
+  post("/:userName/_hooks/edit", accountWebHookForm(true))(oneselfOnly { form =>
+    val userName = params("userName")
+    updateAccountWebHook(userName, form.url, form.events, form.ctype, form.token)
+    flash += "info" -> s"webhook ${form.url} updated"
+    redirect(s"/${userName}/_hooks")
+  })
+
+  /**
+   * Send the test request to registered account web hook URLs.
+   */
+  ajaxPost("/:userName/_hooks/test")(oneselfOnly {
+    // TODO Is it possible to merge with [[RepositorySettingsController.ajaxPost]]?
+    import scala.concurrent.duration._
+    import scala.concurrent._
+    import scala.util.control.NonFatal
+    import org.apache.http.util.EntityUtils
+    import scala.concurrent.ExecutionContext.Implicits.global
+
+    def _headers(h: Array[org.apache.http.Header]): Array[Array[String]] = h.map { h => Array(h.getName, h.getValue) }
+
+    val userName = params("userName")
+    val url = params("url")
+    val token = Some(params("token"))
+    val ctype = WebHookContentType.valueOf(params("ctype"))
+    val dummyWebHookInfo = RepositoryWebHook(userName, "dummy", url, ctype, token)
+    val dummyPayload = {
+      val ownerAccount = getAccountByUserName(userName).get
+      WebHookPushPayload.createDummyPayload(ownerAccount)
+    }
+
+    val (webHook, json, reqFuture, resFuture) = callWebHook(WebHook.Push, List(dummyWebHookInfo), dummyPayload).head
+
+    val toErrorMap: PartialFunction[Throwable, Map[String,String]] = {
+      case e: java.net.UnknownHostException => Map("error"-> ("Unknown host " + e.getMessage))
+      case e: java.lang.IllegalArgumentException => Map("error"-> ("invalid url"))
+      case e: org.apache.http.client.ClientProtocolException => Map("error"-> ("invalid url"))
+      case NonFatal(e) => Map("error"-> (e.getClass + " "+ e.getMessage))
+    }
+
+    contentType = formats("json")
+    org.json4s.jackson.Serialization.write(Map(
+      "url" -> url,
+      "request" -> Await.result(reqFuture.map(req => Map(
+        "headers" -> _headers(req.getAllHeaders),
+        "payload" -> json
+      )).recover(toErrorMap), 20 seconds),
+      "response" -> Await.result(resFuture.map(res => Map(
+        "status"  -> res.getStatusLine(),
+        "body"    -> EntityUtils.toString(res.getEntity()),
+        "headers" -> _headers(res.getAllHeaders())
+      )).recover(toErrorMap), 20 seconds)
+    ))
+  })
+
  get("/register"){
    if(context.settings.allowAccountRegistration){
      if(context.loginAccount.isDefined){
@@ -288,7 +444,7 @@ trait AccountControllerBase extends AccountManagementControllerBase {
  }

  get("/groups/new")(usersOnly {
-    html.group(None, List(GroupMember("", context.loginAccount.get.userName, true)))
+    html.creategroup(List(GroupMember("", context.loginAccount.get.userName, true)))
  })

  post("/groups/new", newGroupForm)(usersOnly { form =>
@@ -304,7 +460,10 @@ trait AccountControllerBase extends AccountManagementControllerBase {

  get("/:groupName/_editgroup")(managersOnly {
    defining(params("groupName")){ groupName =>
-      html.group(getAccountByUserName(groupName, true), getGroupMembers(groupName))
+      // TODO Don't use Option.get
+      getAccountByUserName(groupName, true).map { account =>
+        html.editgroup(account, getGroupMembers(groupName), flash.get("info"))
+      } getOrElse NotFound()
    }
  })

@@ -312,13 +471,17 @@ trait AccountControllerBase extends AccountManagementControllerBase {
    defining(params("groupName")){ groupName =>
      // Remove from GROUP_MEMBER
      updateGroupMembers(groupName, Nil)
-      // Remove repositories
-      getRepositoryNamesOfUser(groupName).foreach { repositoryName =>
-        deleteRepository(groupName, repositoryName)
-        FileUtils.deleteDirectory(getRepositoryDir(groupName, repositoryName))
-        FileUtils.deleteDirectory(getWikiRepositoryDir(groupName, repositoryName))
-        FileUtils.deleteDirectory(getTemporaryDir(groupName, repositoryName))
+      // Disable group
+      getAccountByUserName(groupName, false).foreach { account =>
+        updateGroup(groupName, account.description, account.url, true)
      }
+//      // Remove repositories
+//      getRepositoryNamesOfUser(groupName).foreach { repositoryName =>
+//        deleteRepository(groupName, repositoryName)
+//        FileUtils.deleteDirectory(getRepositoryDir(groupName, repositoryName))
+//        FileUtils.deleteDirectory(getWikiRepositoryDir(groupName, repositoryName))
+//        FileUtils.deleteDirectory(getTemporaryDir(groupName, repositoryName))
+//      }
    }
    redirect("/")
  })
@@ -343,7 +506,9 @@ trait AccountControllerBase extends AccountManagementControllerBase {
 //        }

        updateImage(form.groupName, form.fileId, form.clearImage)
-        redirect(s"/${form.groupName}")
+
+        flash += "info" -> "Account information has been updated."
+        redirect(s"/${groupName}/_editgroup")

      } getOrElse NotFound()
    }
@@ -433,16 +598,23 @@ trait AccountControllerBase extends AccountManagementControllerBase {

          // Insert default labels
          insertDefaultLabels(accountName, repository.name)
+          // Insert default priorities
+          insertDefaultPriorities(accountName, repository.name)

          // clone repository actually
          JGitUtil.cloneRepository(
            getRepositoryDir(repository.owner, repository.name),
-            getRepositoryDir(accountName, repository.name))
+            FileUtil.deleteIfExists(getRepositoryDir(accountName, repository.name)))

          // Create Wiki repository
-          JGitUtil.cloneRepository(
-            getWikiRepositoryDir(repository.owner, repository.name),
-            getWikiRepositoryDir(accountName, repository.name))
+          JGitUtil.cloneRepository(getWikiRepositoryDir(repository.owner, repository.name),
+            FileUtil.deleteIfExists(getWikiRepositoryDir(accountName, repository.name)))
+
+          // Copy LFS files
+          val lfsDir = getLfsDir(repository.owner, repository.name)
+          if(lfsDir.exists){
+            FileUtils.copyDirectory(lfsDir, FileUtil.deleteIfExists(getLfsDir(accountName, repository.name)))
+          }

          // Record activity
          recordForkActivity(repository.owner, repository.name, loginUserName, accountName)
--- a/src/main/scala/gitbucket/core/controller/ApiController.scala
+++ b/src/main/scala/gitbucket/core/controller/ApiController.scala
@@ -33,6 +33,7 @@ class ApiController extends ApiControllerBase
  with WebHookIssueCommentService
  with WikiService
  with ActivityService
+  with PrioritiesService
  with OwnerAuthenticator
  with UsersAuthenticator
  with GroupManagerAuthenticator
@@ -52,6 +53,7 @@ trait ApiControllerBase extends ControllerBase {
    with RepositoryCreationService
    with IssueCreationService
    with HandleCommentService
+    with PrioritiesService
    with OwnerAuthenticator
    with UsersAuthenticator
    with GroupManagerAuthenticator
@@ -365,6 +367,7 @@ trait ApiControllerBase extends ControllerBase {
          data.body,
          data.assignees.headOption,
          milestone.map(_.milestoneId),
+          None,
          data.labels,
          loginAccount)
        JsonFormat(ApiIssue(issue, RepositoryName(repository), ApiUser(loginAccount)))
@@ -378,7 +381,7 @@ trait ApiControllerBase extends ControllerBase {
  get("/api/v3/repos/:owner/:repository/issues/:id/comments")(referrersOnly { repository =>
    (for{
      issueId  <- params("id").toIntOpt
-      comments =  getCommentsForApi(repository.owner, repository.name, issueId.toInt)
+      comments =  getCommentsForApi(repository.owner, repository.name, issueId)
    } yield {
      JsonFormat(comments.map{ case (issueComment, user, issue) => ApiComment(issueComment, RepositoryName(repository), issueId, ApiUser(user), issue.isPullRequest) })
    }) getOrElse NotFound()
--- a/src/main/scala/gitbucket/core/controller/ControllerBase.scala
+++ b/src/main/scala/gitbucket/core/controller/ControllerBase.scala
@@ -147,6 +147,13 @@ abstract class ControllerBase extends ScalatraFilter
      }
    }

+  override def url(path: String, params: Iterable[(String, Any)] = Iterable.empty,
+                   includeContextPath: Boolean = true, includeServletPath: Boolean = true,
+                   absolutize: Boolean = true, withSessionId: Boolean = true)
+                  (implicit request: HttpServletRequest, response: HttpServletResponse): String =
+    if (path.startsWith("http")) path
+    else baseUrl + super.url(path, params, false, false, false)
+
  /**
   * Extends scalatra-form's trim rule to eliminate CR and LF.
   */
@@ -156,7 +163,7 @@ abstract class ControllerBase extends ScalatraFilter
    override def validate(name: String, value: String, params: Map[String, String], messages: Messages): Seq[(String, String)] =
      valueType.validate(name, trim(value), params, messages)

-    private def trim(value: String): String = if(value == null) null else value.replaceAll("\r\n", "").trim
+    private def trim(value: String): String = if(value == null) null else value.replace("\r\n", "").trim
  }

  /**
--- a/src/main/scala/gitbucket/core/controller/FileUploadController.scala
+++ b/src/main/scala/gitbucket/core/controller/FileUploadController.scala
@@ -22,7 +22,12 @@ import org.apache.commons.io.{FileUtils, IOUtils}
 */
 class FileUploadController extends ScalatraServlet with FileUploadSupport with RepositoryService with AccountService {

-  configureMultipartHandling(MultipartConfig(maxFileSize = Some(3 * 1024 * 1024)))
+  val maxFileSize = if (System.getProperty("gitbucket.maxFileSize") != null)
+    System.getProperty("gitbucket.maxFileSize").toLong
+  else
+    3 * 1024 * 1024
+
+  configureMultipartHandling(MultipartConfig(maxFileSize = Some(maxFileSize)))

  post("/image"){
    execute({ (file, fileId) =>
@@ -31,6 +36,13 @@ class FileUploadController extends ScalatraServlet with FileUploadSupport with R
    }, FileUtil.isImage)
  }

+  post("/tmp"){
+    execute({ (file, fileId) =>
+      FileUtils.writeByteArrayToFile(new java.io.File(getTemporaryDir(session.getId), fileId), file.get)
+      session += Keys.Session.Upload(fileId) -> file.name
+    }, _ => true)
+  }
+
  post("/file/:owner/:repository"){
    execute({ (file, fileId) =>
      FileUtils.writeByteArrayToFile(new java.io.File(
--- a/src/main/scala/gitbucket/core/controller/IssuesController.scala
+++ b/src/main/scala/gitbucket/core/controller/IssuesController.scala
@@ -27,6 +27,7 @@ class IssuesController extends IssuesControllerBase
  with PullRequestService
  with WebHookIssueCommentService
  with CommitsService
+  with PrioritiesService

 trait IssuesControllerBase extends ControllerBase {
  self: IssuesService
@@ -41,10 +42,11 @@ trait IssuesControllerBase extends ControllerBase {
    with ReferrerAuthenticator
    with WritableUsersAuthenticator
    with PullRequestService
-    with WebHookIssueCommentService =>
+    with WebHookIssueCommentService
+    with PrioritiesService =>

  case class IssueCreateForm(title: String, content: Option[String],
-    assignedUserName: Option[String], milestoneId: Option[Int], labelNames: Option[String])
+    assignedUserName: Option[String], milestoneId: Option[Int], priorityId: Option[Int], labelNames: Option[String])
  case class CommentForm(issueId: Int, content: String)
  case class IssueStateForm(issueId: Int, content: Option[String])

@@ -53,6 +55,7 @@ trait IssuesControllerBase extends ControllerBase {
      "content"          -> trim(optional(text())),
      "assignedUserName" -> trim(optional(text())),
      "milestoneId"      -> trim(optional(number())),
+      "priorityId"       -> trim(optional(number())),
      "labelNames"       -> trim(optional(text()))
    )(IssueCreateForm.apply)

@@ -76,7 +79,7 @@ trait IssuesControllerBase extends ControllerBase {
  get("/:owner/:repository/issues")(referrersOnly { repository =>
    val q = request.getParameter("q")
    if(Option(q).exists(_.contains("is:pr"))){
-      redirect(s"/${repository.owner}/${repository.name}/pulls?q=" + StringUtil.urlEncode(q))
+      redirect(s"/${repository.owner}/${repository.name}/pulls?q=${StringUtil.urlEncode(q)}")
    } else {
      searchIssues(repository)
    }
@@ -84,17 +87,22 @@ trait IssuesControllerBase extends ControllerBase {

  get("/:owner/:repository/issues/:id")(referrersOnly { repository =>
    defining(repository.owner, repository.name, params("id")){ case (owner, name, issueId) =>
-      getIssue(owner, name, issueId) map {
-        html.issue(
-          _,
-          getComments(owner, name, issueId.toInt),
-          getIssueLabels(owner, name, issueId.toInt),
-          getAssignableUserNames(owner, name),
-          getMilestonesWithIssueCount(owner, name),
-          getLabels(owner, name),
-          isIssueEditable(repository),
-          isIssueManageable(repository),
-          repository)
+      getIssue(owner, name, issueId) map { issue =>
+        if(issue.isPullRequest){
+          redirect(s"/${repository.owner}/${repository.name}/pull/${issueId}")
+        } else {
+          html.issue(
+            issue,
+            getComments(owner, name, issueId.toInt),
+            getIssueLabels(owner, name, issueId.toInt),
+            getAssignableUserNames(owner, name),
+            getMilestonesWithIssueCount(owner, name),
+            getPriorities(owner, name),
+            getLabels(owner, name),
+            isIssueEditable(repository),
+            isIssueManageable(repository),
+            repository)
+        }
      } getOrElse NotFound()
    }
  })
@@ -105,6 +113,8 @@ trait IssuesControllerBase extends ControllerBase {
        html.create(
          getAssignableUserNames(owner, name),
          getMilestones(owner, name),
+          getPriorities(owner, name),
+          getDefaultPriority(owner, name),
          getLabels(owner, name),
          isIssueManageable(repository),
          getContentTemplate(repository, "ISSUE_TEMPLATE"),
@@ -121,6 +131,7 @@ trait IssuesControllerBase extends ControllerBase {
        form.content,
        form.assignedUserName,
        form.milestoneId,
+        form.priorityId,
        form.labelNames.toArray.flatMap(_.split(",")),
        context.loginAccount.get)

@@ -182,7 +193,7 @@ trait IssuesControllerBase extends ControllerBase {
    defining(repository.owner, repository.name){ case (owner, name) =>
      getComment(owner, name, params("id")).map { comment =>
        if(isEditableContent(owner, name, comment.commentedUserName)){
-          updateComment(comment.commentId, form.content)
+          updateComment(comment.issueId, comment.commentId, form.content)
          redirect(s"/${owner}/${name}/issue_comments/_data/${comment.commentId}")
        } else Unauthorized()
      } getOrElse NotFound()
@@ -193,7 +204,7 @@ trait IssuesControllerBase extends ControllerBase {
    defining(repository.owner, repository.name){ case (owner, name) =>
      getComment(owner, name, params("id")).map { comment =>
        if(isEditableContent(owner, name, comment.commentedUserName)){
-          Ok(deleteComment(comment.commentId))
+          Ok(deleteComment(comment.issueId, comment.commentId))
        } else Unauthorized()
      } getOrElse NotFound()
    }
@@ -287,6 +298,11 @@ trait IssuesControllerBase extends ControllerBase {
    } getOrElse Ok()
  })

+  ajaxPost("/:owner/:repository/issues/:id/priority")(writableUsersOnly { repository =>
+    updatePriorityId(repository.owner, repository.name, params("id").toInt, priorityId("priorityId"))
+    Ok("updated")
+  })
+
  post("/:owner/:repository/issues/batchedit/state")(writableUsersOnly { repository =>
    defining(params.get("value")){ action =>
      action match {
@@ -331,6 +347,14 @@ trait IssuesControllerBase extends ControllerBase {
    }
  })

+  post("/:owner/:repository/issues/batchedit/priority")(writableUsersOnly { repository =>
+    defining(priorityId("value")){ value =>
+      executeBatch(repository) {
+        updatePriorityId(repository.owner, repository.name, _, value)
+      }
+    }
+  })
+
  get("/:owner/:repository/_attached/:file")(referrersOnly { repository =>
    (Directory.getAttachedDir(repository.owner, repository.name) match {
      case dir if(dir.exists && dir.isDirectory) =>
@@ -344,6 +368,7 @@ trait IssuesControllerBase extends ControllerBase {

  val assignedUserName = (key: String) => params.get(key) filter (_.trim != "")
  val milestoneId: String => Option[Int] = (key: String) => params.get(key).flatMap(_.toIntOpt)
+  val priorityId: String => Option[Int] = (key: String) => params.get(key).flatMap(_.toIntOpt)

  private def executeBatch(repository: RepositoryService.RepositoryInfo)(execute: Int => Unit) = {
    params("checked").split(',') map(_.toInt) foreach execute
@@ -366,6 +391,7 @@ trait IssuesControllerBase extends ControllerBase {
          page,
          getAssignableUserNames(owner, repoName),
          getMilestones(owner, repoName),
+          getPriorities(owner, repoName),
          getLabels(owner, repoName),
          countIssue(condition.copy(state = "open"  ), false, owner -> repoName),
          countIssue(condition.copy(state = "closed"), false, owner -> repoName),
--- a/src/main/scala/gitbucket/core/controller/PrioritiesController.scala
+++ b/src/main/scala/gitbucket/core/controller/PrioritiesController.scala
@@ -0,0 +1,111 @@
+package gitbucket.core.controller
+
+import gitbucket.core.issues.priorities.html
+import gitbucket.core.service.{RepositoryService, AccountService, IssuesService, PrioritiesService}
+import gitbucket.core.util.{ReferrerAuthenticator, WritableUsersAuthenticator}
+import gitbucket.core.util.Implicits._
+import io.github.gitbucket.scalatra.forms._
+import org.scalatra.i18n.Messages
+import org.scalatra.Ok
+
+class PrioritiesController extends PrioritiesControllerBase
+  with PrioritiesService with IssuesService with RepositoryService with AccountService
+with ReferrerAuthenticator with WritableUsersAuthenticator
+
+trait PrioritiesControllerBase extends ControllerBase {
+  self: PrioritiesService with IssuesService with RepositoryService
+    with ReferrerAuthenticator with WritableUsersAuthenticator =>
+
+  case class PriorityForm(priorityName: String, description: Option[String], color: String)
+
+  val priorityForm = mapping(
+    "priorityName"  -> trim(label("Priority name", text(required, priorityName, uniquePriorityName, maxlength(100)))),
+    "description"   -> trim(label("Description", optional(text(maxlength(255))))),
+    "priorityColor" -> trim(label("Color", text(required, color)))
+  )(PriorityForm.apply)
+
+
+  get("/:owner/:repository/issues/priorities")(referrersOnly { repository =>
+    html.list(
+      getPriorities(repository.owner, repository.name),
+      countIssueGroupByPriorities(repository.owner, repository.name, IssuesService.IssueSearchCondition(), Map.empty),
+      repository,
+      hasDeveloperRole(repository.owner, repository.name, context.loginAccount))
+  })
+
+  ajaxGet("/:owner/:repository/issues/priorities/new")(writableUsersOnly { repository =>
+    html.edit(None, repository)
+  })
+
+  ajaxPost("/:owner/:repository/issues/priorities/new", priorityForm)(writableUsersOnly { (form, repository) =>
+    val priorityId = createPriority(repository.owner, repository.name, form.priorityName, form.description, form.color.substring(1))
+    html.priority(
+      getPriority(repository.owner, repository.name, priorityId).get,
+      countIssueGroupByPriorities(repository.owner, repository.name, IssuesService.IssueSearchCondition(), Map.empty),
+      repository,
+      hasDeveloperRole(repository.owner, repository.name, context.loginAccount))
+  })
+
+  ajaxGet("/:owner/:repository/issues/priorities/:priorityId/edit")(writableUsersOnly { repository =>
+    getPriority(repository.owner, repository.name, params("priorityId").toInt).map { priority =>
+      html.edit(Some(priority), repository)
+    } getOrElse NotFound()
+  })
+
+  ajaxPost("/:owner/:repository/issues/priorities/:priorityId/edit", priorityForm)(writableUsersOnly { (form, repository) =>
+    updatePriority(repository.owner, repository.name, params("priorityId").toInt, form.priorityName, form.description, form.color.substring(1))
+    html.priority(
+      getPriority(repository.owner, repository.name, params("priorityId").toInt).get,
+      countIssueGroupByPriorities(repository.owner, repository.name, IssuesService.IssueSearchCondition(), Map.empty),
+      repository,
+      hasDeveloperRole(repository.owner, repository.name, context.loginAccount))
+  })
+
+  ajaxPost("/:owner/:repository/issues/priorities/reorder")(writableUsersOnly { (repository) =>
+    reorderPriorities(repository.owner, repository.name, params("order")
+      .split(",")
+      .map(id => id.toInt)
+      .zipWithIndex
+      .toMap)
+
+    Ok()
+  })
+
+  ajaxPost("/:owner/:repository/issues/priorities/default")(writableUsersOnly { (repository) =>
+    setDefaultPriority(repository.owner, repository.name, priorityId("priorityId"))
+    Ok()
+  })
+
+  ajaxPost("/:owner/:repository/issues/priorities/:priorityId/delete")(writableUsersOnly { repository =>
+    deletePriority(repository.owner, repository.name, params("priorityId").toInt)
+    Ok()
+  })
+
+  val priorityId: String => Option[Int] = (key: String) => params.get(key).flatMap(_.toIntOpt)
+
+  /**
+   * Constraint for the identifier such as user name, repository name or page name.
+   */
+  private def priorityName: Constraint = new Constraint(){
+    override def validate(name: String, value: String, messages: Messages): Option[String] =
+      if(value.contains(',')){
+        Some(s"${name} contains invalid character.")
+      } else if(value.startsWith("_") || value.startsWith("-")){
+        Some(s"${name} starts with invalid character.")
+      } else {
+        None
+      }
+  }
+
+  private def uniquePriorityName: Constraint = new Constraint(){
+    override def validate(name: String, value: String, params: Map[String, String], messages: Messages): Option[String] = {
+      val owner = params("owner")
+      val repository = params("repository")
+      params.get("priorityId").map { priorityId =>
+        getPriority(owner, repository, value).filter(_.priorityId != priorityId.toInt).map(_ => "Name has already been taken.")
+      }.getOrElse {
+        getPriority(owner, repository, value).map(_ => "Name has already been taken.")
+      }
+    }
+  }
+}
--- a/src/main/scala/gitbucket/core/controller/PullRequestsController.scala
+++ b/src/main/scala/gitbucket/core/controller/PullRequestsController.scala
@@ -1,6 +1,7 @@
 package gitbucket.core.controller

 import gitbucket.core.model.WebHook
+import gitbucket.core.plugin.PluginRegistry
 import gitbucket.core.pulls.html
 import gitbucket.core.service.CommitStatusService
 import gitbucket.core.service.MergeService
@@ -23,14 +24,14 @@ class PullRequestsController extends PullRequestsControllerBase
  with RepositoryService with AccountService with IssuesService with PullRequestService with MilestonesService with LabelsService
  with CommitsService with ActivityService with WebHookPullRequestService
  with ReadableUsersAuthenticator with ReferrerAuthenticator with WritableUsersAuthenticator
-  with CommitStatusService with MergeService with ProtectedBranchService
+  with CommitStatusService with MergeService with ProtectedBranchService with PrioritiesService


 trait PullRequestsControllerBase extends ControllerBase {
  self: RepositoryService with AccountService with IssuesService with MilestonesService with LabelsService
    with CommitsService with ActivityService with PullRequestService with WebHookPullRequestService
    with ReadableUsersAuthenticator with ReferrerAuthenticator with WritableUsersAuthenticator
-    with CommitStatusService with MergeService with ProtectedBranchService =>
+    with CommitStatusService with MergeService with ProtectedBranchService with PrioritiesService =>

  val pullRequestForm = mapping(
    "title"                 -> trim(label("Title"  , text(required, maxlength(100)))),
@@ -44,6 +45,7 @@ trait PullRequestsControllerBase extends ControllerBase {
    "commitIdTo"            -> trim(text(required, maxlength(40))),
    "assignedUserName"      -> trim(optional(text())),
    "milestoneId"           -> trim(optional(number())),
+    "priorityId"            -> trim(optional(number())),
    "labelNames"            -> trim(optional(text()))
  )(PullRequestForm.apply)

@@ -63,6 +65,7 @@ trait PullRequestsControllerBase extends ControllerBase {
    commitIdTo: String,
    assignedUserName: Option[String],
    milestoneId: Option[Int],
+    priorityId: Option[Int],
    labelNames: Option[String]
  )

@@ -92,12 +95,15 @@ trait PullRequestsControllerBase extends ControllerBase {
            getIssueLabels(owner, name, issueId),
            getAssignableUserNames(owner, name),
            getMilestonesWithIssueCount(owner, name),
+            getPriorities(owner, name),
            getLabels(owner, name),
            commits,
            diffs,
            isEditable(repository),
            isManageable(repository),
+            hasDeveloperRole(pullreq.requestUserName, pullreq.requestRepositoryName, context.loginAccount),
            repository,
+            getRepository(pullreq.requestUserName, pullreq.requestRepositoryName),
            flash.toMap.map(f => f._1 -> f._2.toString))
        }
      }
@@ -138,22 +144,36 @@ trait PullRequestsControllerBase extends ControllerBase {
    } getOrElse NotFound()
  })

-  get("/:owner/:repository/pull/:id/delete/*")(writableUsersOnly { repository =>
-    params("id").toIntOpt.map { issueId =>
-      val branchName = multiParams("splat").head
-      val userName   = context.loginAccount.get.userName
-      if(repository.repository.defaultBranch != branchName){
-        using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
-          git.branchDelete().setForce(true).setBranchNames(branchName).call()
-          recordDeleteBranchActivity(repository.owner, repository.name, userName, branchName)
+  get("/:owner/:repository/pull/:id/delete_branch")(readableUsersOnly { baseRepository =>
+    (for {
+      issueId <- params("id").toIntOpt
+      loginAccount <- context.loginAccount
+      (issue, pullreq) <- getPullRequest(baseRepository.owner, baseRepository.name, issueId)
+      owner = pullreq.requestUserName
+      name  = pullreq.requestRepositoryName
+      if hasDeveloperRole(owner, name, context.loginAccount)
+    } yield {
+      val repository = getRepository(owner, name).get
+      val branchProtection = getProtectedBranchInfo(owner, name, pullreq.requestBranch)
+      if(branchProtection.enabled){
+        flash += "error" -> s"branch ${pullreq.requestBranch} is protected."
+      } else {
+        if(repository.repository.defaultBranch != pullreq.requestBranch){
+          val userName = context.loginAccount.get.userName
+          using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
+            git.branchDelete().setForce(true).setBranchNames(pullreq.requestBranch).call()
+            recordDeleteBranchActivity(repository.owner, repository.name, userName, pullreq.requestBranch)
+          }
+          createComment(baseRepository.owner, baseRepository.name, userName, issueId, pullreq.requestBranch, "delete_branch")
+        } else {
+          flash += "error" -> s"""Can't delete the default branch "${pullreq.requestBranch}"."""
        }
      }
-      createComment(repository.owner, repository.name, userName, issueId, branchName, "delete_branch")
-      redirect(s"/${repository.owner}/${repository.name}/pull/${issueId}")
-    } getOrElse NotFound()
+      redirect(s"/${baseRepository.owner}/${baseRepository.name}/pull/${issueId}")
+    }) getOrElse NotFound()
  })

-  post("/:owner/:repository/pull/:id/update_branch")(writableUsersOnly { baseRepository =>
+  post("/:owner/:repository/pull/:id/update_branch")(readableUsersOnly { baseRepository =>
    (for {
      issueId <- params("id").toIntOpt
      loginAccount <- context.loginAccount
@@ -217,7 +237,7 @@ trait PullRequestsControllerBase extends ControllerBase {
          }
        }
      }
-      redirect(s"/${repository.owner}/${repository.name}/pull/${issueId}")
+      redirect(s"/${baseRepository.owner}/${baseRepository.name}/pull/${issueId}")

    }) getOrElse NotFound()
  })
@@ -261,10 +281,8 @@ trait PullRequestsControllerBase extends ControllerBase {
            // call web hook
            callPullRequestWebHook("closed", repository, issueId, context.baseUrl, context.loginAccount.get)

-            // notifications
-            Notifier().toNotify(repository, issue, "merge"){
-              Notifier.msgStatus(s"${context.baseUrl}/${owner}/${name}/pull/${issueId}")
-            }
+            // call hooks
+            PluginRegistry().getPullRequestHooks.foreach(_.merged(issue, repository))

            redirect(s"/${owner}/${name}/pull/${issueId}")
          }
@@ -359,10 +377,10 @@ trait PullRequestsControllerBase extends ControllerBase {
              title,
              commits,
              diffs,
-              (forkedRepository.repository.originUserName, forkedRepository.repository.originRepositoryName) match {
+              ((forkedRepository.repository.originUserName, forkedRepository.repository.originRepositoryName) match {
                case (Some(userName), Some(repositoryName)) => (userName, repositoryName) :: getForkedRepositories(userName, repositoryName)
                case _ => (forkedRepository.owner, forkedRepository.name) :: getForkedRepositories(forkedRepository.owner, forkedRepository.name)
-              },
+              }).filter { case (owner, name) => hasGuestRole(owner, name, context.loginAccount) },
              commits.flatten.map(commit => getCommitComments(forkedRepository.owner, forkedRepository.name, commit.id, false)).flatten.toList,
              originId,
              forkedId,
@@ -375,6 +393,7 @@ trait PullRequestsControllerBase extends ControllerBase {
              hasDeveloperRole(originRepository.owner, originRepository.name, context.loginAccount),
              getAssignableUserNames(originRepository.owner, originRepository.name),
              getMilestones(originRepository.owner, originRepository.name),
+              getPriorities(originRepository.owner, originRepository.name),
              getLabels(originRepository.owner, originRepository.name)
            )
          }
@@ -430,6 +449,7 @@ trait PullRequestsControllerBase extends ControllerBase {
        content = form.content,
        assignedUserName = if (manageable) form.assignedUserName else None,
        milestoneId = if (manageable) form.milestoneId else None,
+        priorityId = if (manageable) form.priorityId else None,
        isPullRequest = true)

      createPullRequest(
@@ -468,10 +488,8 @@ trait PullRequestsControllerBase extends ControllerBase {
        // extract references and create refer comment
        createReferComment(owner, name, issue, form.title + " " + form.content.getOrElse(""), context.loginAccount.get)

-        // notifications
-        Notifier().toNotify(repository, issue, form.content.getOrElse("")) {
-          Notifier.msgPullRequest(s"${context.baseUrl}/${owner}/${name}/pull/${issueId}")
-        }
+        // call hooks
+        PluginRegistry().getPullRequestHooks.foreach(_.created(issue, repository))
      }

      redirect(s"/${owner}/${name}/pull/${issueId}")
@@ -505,6 +523,7 @@ trait PullRequestsControllerBase extends ControllerBase {
        page,
        getAssignableUserNames(owner, repoName),
        getMilestones(owner, repoName),
+        getPriorities(owner, repoName),
        getLabels(owner, repoName),
        countIssue(condition.copy(state = "open"  ), true, owner -> repoName),
        countIssue(condition.copy(state = "closed"), true, owner -> repoName),
--- a/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
@@ -1,7 +1,7 @@
 package gitbucket.core.controller

 import gitbucket.core.settings.html
-import gitbucket.core.model.WebHook
+import gitbucket.core.model.{WebHook, RepositoryWebHook}
 import gitbucket.core.service._
 import gitbucket.core.service.WebHookService._
 import gitbucket.core.util._
@@ -40,7 +40,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
  )

  val optionsForm = mapping(
-    "repositoryName"    -> trim(label("Repository Name"    , text(required, maxlength(100), identifier, renameRepositoryName))),
+    "repositoryName"    -> trim(label("Repository Name"    , text(required, maxlength(100), repository, renameRepositoryName))),
    "description"       -> trim(label("Description"        , optional(text()))),
    "isPrivate"         -> trim(label("Repository Type"    , boolean())),
    "issuesOption"      -> trim(label("Issues Option"      , text(required, featureOption))),
@@ -133,21 +133,12 @@ trait RepositorySettingsControllerBase extends ControllerBase {
          FileUtils.moveDirectory(dir, getWikiRepositoryDir(repository.owner, form.repositoryName))
        }
      }
-      // Move lfs directory
-      defining(getLfsDir(repository.owner, repository.name)){ dir =>
+      // Move files directory
+      defining(getRepositoryFilesDir(repository.owner, repository.name)){ dir =>
        if(dir.isDirectory) {
-          FileUtils.moveDirectory(dir, getLfsDir(repository.owner, form.repositoryName))
+          FileUtils.moveDirectory(dir, getRepositoryFilesDir(repository.owner, form.repositoryName))
        }
      }
-      // Move attached directory
-      defining(getAttachedDir(repository.owner, repository.name)){ dir =>
-        if(dir.isDirectory) {
-          FileUtils.moveDirectory(dir, getAttachedDir(repository.owner, form.repositoryName))
-        }
-      }
-      // Delete parent directory
-      FileUtil.deleteDirectoryIfEmpty(getRepositoryFilesDir(repository.owner, repository.name))
-
      // Call hooks
      PluginRegistry().getRepositoryHooks.foreach(_.renamed(repository.owner, repository.name, form.repositoryName))
    }
@@ -159,7 +150,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
  get("/:owner/:repository/settings/branches")(ownerOnly { repository =>
    val protecteions = getProtectedBranchList(repository.owner, repository.name)
    html.branches(repository, protecteions, flash.get("info"))
-  });
+  })

  /** Update default branch */
  post("/:owner/:repository/settings/update_default_branch", defaultBranchForm)(ownerOnly { (form, repository) =>
@@ -221,8 +212,8 @@ trait RepositorySettingsControllerBase extends ControllerBase {
   * Display the web hook edit page.
   */
  get("/:owner/:repository/settings/hooks/new")(ownerOnly { repository =>
-    val webhook = WebHook(repository.owner, repository.name, "", WebHookContentType.FORM, None)
-    html.edithooks(webhook, Set(WebHook.Push), repository, flash.get("info"), true)
+    val webhook = RepositoryWebHook(repository.owner, repository.name, "", WebHookContentType.FORM, None)
+    html.edithook(webhook, Set(WebHook.Push), repository, true)
  })

  /**
@@ -260,7 +251,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
      val url = params("url")
      val token = Some(params("token"))
      val ctype = WebHookContentType.valueOf(params("ctype"))
-      val dummyWebHookInfo = WebHook(repository.owner, repository.name, url, ctype, token)
+      val dummyWebHookInfo = RepositoryWebHook(repository.owner, repository.name, url, ctype, token)
      val dummyPayload = {
        val ownerAccount = getAccountByUserName(repository.owner).get
        val commits = if(JGitUtil.isEmpty(git)) List.empty else git.log
@@ -297,7 +288,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
          "headers" -> _headers(req.getAllHeaders),
          "payload" -> json
        )).recover(toErrorMap), 20 seconds),
-        "responce" -> Await.result(resFuture.map(res => Map(
+        "response" -> Await.result(resFuture.map(res => Map(
          "status"  -> res.getStatusLine(),
          "body"    -> EntityUtils.toString(res.getEntity()),
          "headers" -> _headers(res.getAllHeaders())
@@ -311,7 +302,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
   */
  get("/:owner/:repository/settings/hooks/edit")(ownerOnly { repository =>
    getWebHook(repository.owner, repository.name, params("url")).map{ case (webhook, events) =>
-      html.edithooks(webhook, events, repository, flash.get("info"), false)
+      html.edithook(webhook, events, repository, false)
    } getOrElse NotFound()
  })

@@ -364,7 +355,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
            FileUtils.moveDirectory(dir, getAttachedDir(form.newOwner, repository.name))
          }
        }
-        // Delere parent directory
+        // Delete parent directory
        FileUtil.deleteDirectoryIfEmpty(getRepositoryFilesDir(repository.owner, repository.name))

        // Call hooks
@@ -402,7 +393,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
  post("/:owner/:repository/settings/gc")(ownerOnly { repository =>
    LockUtil.lock(s"${repository.owner}/${repository.name}") {
      using(Git.open(getRepositoryDir(repository.owner, repository.name))) { git =>
-        git.gc();
+        git.gc()
      }
    }
    flash += "info" -> "Garbage collection has been executed."
--- a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
@@ -1,6 +1,6 @@
 package gitbucket.core.controller

-import java.io.FileInputStream
+import java.io.File
 import javax.servlet.http.{HttpServletRequest, HttpServletResponse}

 import gitbucket.core.plugin.PluginRegistry
@@ -18,15 +18,14 @@ import gitbucket.core.service.WebHookService._
 import gitbucket.core.view
 import gitbucket.core.view.helpers
 import io.github.gitbucket.scalatra.forms._
-import org.apache.commons.io.IOUtils
+import org.apache.commons.io.FileUtils
 import org.eclipse.jgit.api.{ArchiveCommand, Git}
 import org.eclipse.jgit.archive.{TgzFormat, ZipFormat}
-import org.eclipse.jgit.dircache.DirCache
+import org.eclipse.jgit.dircache.{DirCache, DirCacheBuilder}
 import org.eclipse.jgit.errors.MissingObjectException
 import org.eclipse.jgit.lib._
-import org.eclipse.jgit.revwalk.RevCommit
-import org.eclipse.jgit.treewalk._
 import org.scalatra._
+import org.scalatra.i18n.Messages


 class RepositoryViewerController extends RepositoryViewerControllerBase
@@ -45,6 +44,13 @@ trait RepositoryViewerControllerBase extends ControllerBase {
  ArchiveCommand.registerFormat("zip", new ZipFormat)
  ArchiveCommand.registerFormat("tar.gz", new TgzFormat)

+  case class UploadForm(
+    branch: String,
+    path: String,
+    uploadFiles: String,
+    message: Option[String]
+  )
+
  case class EditorForm(
    branch: String,
    path: String,
@@ -53,14 +59,16 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    charset: String,
    lineSeparator: String,
    newFileName: String,
-    oldFileName: Option[String]
+    oldFileName: Option[String],
+    commit: String
  )

  case class DeleteForm(
    branch: String,
    path: String,
    message: Option[String],
-    fileName: String
+    fileName: String,
+    commit: String
  )

  case class CommentForm(
@@ -71,6 +79,13 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    issueId: Option[Int]
  )

+  val uploadForm = mapping(
+    "branch"        -> trim(label("Branch", text(required))),
+    "path"          -> trim(label("Path", text())),
+    "uploadFiles"   -> trim(label("Upload files", text(required))),
+    "message"       -> trim(label("Message", optional(text()))),
+  )(UploadForm.apply)
+
  val editorForm = mapping(
    "branch"        -> trim(label("Branch", text(required))),
    "path"          -> trim(label("Path", text())),
@@ -79,14 +94,16 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    "charset"       -> trim(label("Charset", text(required))),
    "lineSeparator" -> trim(label("Line Separator", text(required))),
    "newFileName"   -> trim(label("Filename", text(required))),
-    "oldFileName"   -> trim(label("Old filename", optional(text())))
+    "oldFileName"   -> trim(label("Old filename", optional(text()))),
+    "commit"        -> trim(label("Commit", text(required, conflict)))
  )(EditorForm.apply)

  val deleteForm = mapping(
    "branch"   -> trim(label("Branch", text(required))),
    "path"     -> trim(label("Path", text())),
    "message"  -> trim(label("Message", optional(text()))),
-    "fileName" -> trim(label("Filename", text(required)))
+    "fileName" -> trim(label("Filename", text(required))),
+    "commit"   -> trim(label("Commit", text(required, conflict)))
  )(DeleteForm.apply)

  val commentForm = mapping(
@@ -183,11 +200,50 @@ trait RepositoryViewerControllerBase extends ControllerBase {
  get("/:owner/:repository/new/*")(writableUsersOnly { repository =>
    val (branch, path) = repository.splitPath(multiParams("splat").head)
    val protectedBranch = getProtectedBranchInfo(repository.owner, repository.name, branch).needStatusCheck(context.loginAccount.get.userName)
-    html.editor(branch, repository, if(path.length == 0) Nil else path.split("/").toList,
-      None, JGitUtil.ContentInfo("text", None, None, Some("UTF-8")),
-      protectedBranch)
+
+    using(Git.open(getRepositoryDir(repository.owner, repository.name))) { git =>
+      val revCommit = JGitUtil.getRevCommitFromId(git, git.getRepository.resolve(branch))
+
+      html.editor(
+        branch          = branch,
+        repository      = repository,
+        pathList        = if (path.length == 0) Nil else path.split("/").toList,
+        fileName        = None,
+        content         = JGitUtil.ContentInfo("text", None, None, Some("UTF-8")),
+        protectedBranch = protectedBranch,
+        commit          = revCommit.getName
+      )
+    }
  })

+  get("/:owner/:repository/upload/*")(writableUsersOnly { repository =>
+    val (branch, path) = repository.splitPath(multiParams("splat").head)
+    val protectedBranch = getProtectedBranchInfo(repository.owner, repository.name, branch).needStatusCheck(context.loginAccount.get.userName)
+    html.upload(branch, repository, if(path.length == 0) Nil else path.split("/").toList, protectedBranch)
+  })
+
+  post("/:owner/:repository/upload", uploadForm)(writableUsersOnly { (form, repository) =>
+    val files = form.uploadFiles.split("\n").map { line =>
+      val i = line.indexOf(':')
+      CommitFile(line.substring(0, i).trim, line.substring(i + 1).trim)
+    }
+
+    commitFiles(
+      repository = repository,
+      branch     = form.branch,
+      path       = form.path,
+      files      = files,
+      message    = form.message.getOrElse("Add files via upload")
+    )
+
+    if(form.path.length == 0){
+      redirect(s"/${repository.owner}/${repository.name}/tree/${form.branch}")
+    } else {
+      redirect(s"/${repository.owner}/${repository.name}/tree/${form.branch}/${form.path}")
+    }
+  })
+
+
  get("/:owner/:repository/edit/*")(writableUsersOnly { repository =>
    val (branch, path) = repository.splitPath(multiParams("splat").head)
    val protectedBranch = getProtectedBranchInfo(repository.owner, repository.name, branch).needStatusCheck(context.loginAccount.get.userName)
@@ -197,9 +253,15 @@ trait RepositoryViewerControllerBase extends ControllerBase {

      getPathObjectId(git, path, revCommit).map { objectId =>
        val paths = path.split("/")
-        html.editor(branch, repository, paths.take(paths.size - 1).toList, Some(paths.last),
-          JGitUtil.getContentInfo(git, path, objectId),
-          protectedBranch)
+        html.editor(
+          branch          = branch,
+          repository      = repository,
+          pathList        = paths.take(paths.size - 1).toList,
+          fileName        = Some(paths.last),
+          content         = JGitUtil.getContentInfo(git, path, objectId),
+          protectedBranch = protectedBranch,
+          commit          = revCommit.getName
+        )
      } getOrElse NotFound()
    }
  })
@@ -211,8 +273,14 @@ trait RepositoryViewerControllerBase extends ControllerBase {

      getPathObjectId(git, path, revCommit).map { objectId =>
        val paths = path.split("/")
-        html.delete(branch, repository, paths.take(paths.size - 1).toList, paths.last,
-          JGitUtil.getContentInfo(git, path, objectId))
+        html.delete(
+          branch     = branch,
+          repository = repository,
+          pathList   = paths.take(paths.size - 1).toList,
+          fileName   = paths.last,
+          content    = JGitUtil.getContentInfo(git, path, objectId),
+          commit     = revCommit.getName
+        )
      } getOrElse NotFound()
    }
  })
@@ -226,7 +294,8 @@ trait RepositoryViewerControllerBase extends ControllerBase {
      oldFileName = None,
      content     = appendNewLine(convertLineSeparator(form.content, form.lineSeparator), form.lineSeparator),
      charset     = form.charset,
-      message     = form.message.getOrElse(s"Create ${form.newFileName}")
+      message     = form.message.getOrElse(s"Create ${form.newFileName}"),
+      commit      = form.commit
    )

    redirect(s"/${repository.owner}/${repository.name}/blob/${form.branch}/${
@@ -243,21 +312,31 @@ trait RepositoryViewerControllerBase extends ControllerBase {
      oldFileName = form.oldFileName,
      content     = appendNewLine(convertLineSeparator(form.content, form.lineSeparator), form.lineSeparator),
      charset     = form.charset,
-      message     = if(form.oldFileName.contains(form.newFileName)){
+      message     = if (form.oldFileName.contains(form.newFileName)) {
        form.message.getOrElse(s"Update ${form.newFileName}")
      } else {
        form.message.getOrElse(s"Rename ${form.oldFileName.get} to ${form.newFileName}")
-      }
+      },
+      commit      = form.commit
    )

    redirect(s"/${repository.owner}/${repository.name}/blob/${form.branch}/${
-      if(form.path.length == 0) urlEncode(form.newFileName) else s"${form.path}/${urlEncode(form.newFileName)}"
+      if (form.path.length == 0) urlEncode(form.newFileName) else s"${form.path}/${urlEncode(form.newFileName)}"
    }")
  })

  post("/:owner/:repository/remove", deleteForm)(writableUsersOnly { (form, repository) =>
-    commitFile(repository, form.branch, form.path, None, Some(form.fileName), "", "",
-      form.message.getOrElse(s"Delete ${form.fileName}"))
+    commitFile(
+      repository  = repository,
+      branch      = form.branch,
+      path        = form.path,
+      newFileName = None,
+      oldFileName = Some(form.fileName),
+      content     = "",
+      charset     = "",
+      message     = form.message.getOrElse(s"Delete ${form.fileName}"),
+      commit      = form.commit
+    )

    redirect(s"/${repository.owner}/${repository.name}/tree/${form.branch}${if(form.path.length == 0) "" else form.path}")
  })
@@ -286,12 +365,16 @@ trait RepositoryViewerControllerBase extends ControllerBase {
          // Download (This route is left for backword compatibility)
          responseRawFile(git, objectId, path, repository)
        } else {
-          html.blob(id, repository, path.split("/").toList,
-            JGitUtil.getContentInfo(git, path, objectId),
-            new JGitUtil.CommitInfo(JGitUtil.getLastModifiedCommit(git, revCommit, path)),
-            hasDeveloperRole(repository.owner, repository.name, context.loginAccount),
-            request.paths(2) == "blame",
-            isLfsFile(git, objectId))
+          html.blob(
+            branch             = id,
+            repository         = repository,
+            pathList           = path.split("/").toList,
+            content            = JGitUtil.getContentInfo(git, path, objectId),
+            latestCommit       = new JGitUtil.CommitInfo(JGitUtil.getLastModifiedCommit(git, revCommit, path)),
+            hasWritePermission = hasDeveloperRole(repository.owner, repository.name, context.loginAccount),
+            isBlame            = request.paths(2) == "blame",
+            isLfsFile          = isLfsFile(git, objectId)
+          )
        }
      } getOrElse NotFound()
    }
@@ -558,6 +641,116 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    }
  })

+  case class UploadFiles(branch: String, path: String, fileIds: Map[String,String], message: String) {
+    lazy val isValid: Boolean = fileIds.nonEmpty
+  }
+
+  case class CommitFile(id: String, name: String)
+
+  private def commitFiles(repository: RepositoryService.RepositoryInfo,
+                          files: Seq[CommitFile],
+                          branch: String, path: String, message: String) = {
+    // prepend path to the filename
+    val newFiles = files.map { file =>
+      file.copy(name = if(path.length == 0) file.name else s"${path}/${file.name}")
+    }
+
+    _commitFile(repository, branch, message) { case (git, headTip, builder, inserter) =>
+      JGitUtil.processTree(git, headTip) { (path, tree) =>
+        if(!newFiles.exists(_.name.contains(path))) {
+          builder.add(JGitUtil.createDirCacheEntry(path, tree.getEntryFileMode, tree.getEntryObjectId))
+        }
+      }
+
+      newFiles.foreach { file =>
+        val bytes = FileUtils.readFileToByteArray(new File(getTemporaryDir(session.getId), file.id))
+        builder.add(JGitUtil.createDirCacheEntry(file.name,
+          FileMode.REGULAR_FILE, inserter.insert(Constants.OBJ_BLOB, bytes)))
+        builder.finish()
+      }
+    }
+  }
+
+  private def commitFile(repository: RepositoryService.RepositoryInfo,
+    branch: String, path: String, newFileName: Option[String], oldFileName: Option[String],
+    content: String, charset: String, message: String, commit: String) = {
+
+    val newPath = newFileName.map { newFileName => if(path.length == 0) newFileName else s"${path}/${newFileName}" }
+    val oldPath = oldFileName.map { oldFileName => if(path.length == 0) oldFileName else s"${path}/${oldFileName}" }
+
+    _commitFile(repository, branch, message){ case (git, headTip, builder, inserter) =>
+      if(headTip.getName == commit){
+        val permission = JGitUtil.processTree(git, headTip) { (path, tree) =>
+          // Add all entries except the editing file
+          if (!newPath.contains(path) && !oldPath.contains(path)) {
+            builder.add(JGitUtil.createDirCacheEntry(path, tree.getEntryFileMode, tree.getEntryObjectId))
+          }
+          // Retrieve permission if file exists to keep it
+          oldPath.collect { case x if x == path => tree.getEntryFileMode.getBits }
+        }.flatten.headOption
+
+        newPath.foreach { newPath =>
+          builder.add(JGitUtil.createDirCacheEntry(newPath,
+            permission.map { bits => FileMode.fromBits(bits) } getOrElse FileMode.REGULAR_FILE,
+            inserter.insert(Constants.OBJ_BLOB, content.getBytes(charset))))
+        }
+        builder.finish()
+      }
+    }
+  }
+
+  private def _commitFile(repository: RepositoryService.RepositoryInfo,
+    branch: String, message: String)(f: (Git, ObjectId, DirCacheBuilder, ObjectInserter) => Unit) = {
+
+    LockUtil.lock(s"${repository.owner}/${repository.name}") {
+      using(Git.open(getRepositoryDir(repository.owner, repository.name))) { git =>
+        val loginAccount = context.loginAccount.get
+        val builder = DirCache.newInCore.builder()
+        val inserter = git.getRepository.newObjectInserter()
+        val headName = s"refs/heads/${branch}"
+        val headTip = git.getRepository.resolve(headName)
+
+        f(git, headTip, builder, inserter)
+
+        val commitId = JGitUtil.createNewCommit(git, inserter, headTip, builder.getDirCache.writeTree(inserter),
+          headName, loginAccount.userName, loginAccount.mailAddress, message)
+
+        inserter.flush()
+        inserter.close()
+
+        // update refs
+        val refUpdate = git.getRepository.updateRef(headName)
+        refUpdate.setNewObjectId(commitId)
+        refUpdate.setForceUpdate(false)
+        refUpdate.setRefLogIdent(new PersonIdent(loginAccount.fullName, loginAccount.mailAddress))
+        refUpdate.update()
+
+        // update pull request
+        updatePullRequests(repository.owner, repository.name, branch)
+
+        // record activity
+        val commitInfo = new CommitInfo(JGitUtil.getRevCommitFromId(git, commitId))
+        recordPushActivity(repository.owner, repository.name, loginAccount.userName, branch, List(commitInfo))
+
+        // create issue comment by commit message
+        createIssueComment(repository.owner, repository.name, commitInfo)
+
+        // close issue by commit message
+        closeIssuesFromMessage(message, loginAccount.userName, repository.owner, repository.name)
+
+        //call web hook
+        callPullRequestWebHookByRequestBranch("synchronize", repository, branch, context.baseUrl, loginAccount)
+        val commit = new JGitUtil.CommitInfo(JGitUtil.getRevCommitFromId(git, commitId))
+        callWebHookOf(repository.owner, repository.name, WebHook.Push) {
+          getAccountByUserName(repository.owner).map{ ownerAccount =>
+            WebHookPushPayload(git, loginAccount, headName, repository, List(commit), ownerAccount,
+              oldId = headTip, newId = commitId)
+          }
+        }
+      }
+    }
+  }
+
  private val readmeFiles = PluginRegistry().renderableExtensions.map { extension =>
    s"readme.${extension}"
  } ++ Seq("readme.txt", "readme")
@@ -608,77 +801,6 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    }
  }

-  private def commitFile(repository: RepositoryService.RepositoryInfo,
-                         branch: String, path: String, newFileName: Option[String], oldFileName: Option[String],
-                         content: String, charset: String, message: String) = {
-
-    val newPath = newFileName.map { newFileName => if(path.length == 0) newFileName else s"${path}/${newFileName}" }
-    val oldPath = oldFileName.map { oldFileName => if(path.length == 0) oldFileName else s"${path}/${oldFileName}" }
-
-    LockUtil.lock(s"${repository.owner}/${repository.name}"){
-      using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
-        val loginAccount = context.loginAccount.get
-        val builder  = DirCache.newInCore.builder()
-        val inserter = git.getRepository.newObjectInserter()
-        val headName = s"refs/heads/${branch}"
-        val headTip  = git.getRepository.resolve(headName)
-
-        val permission = JGitUtil.processTree(git, headTip){ (path, tree) =>
-          // Add all entries except the editing file
-          if(!newPath.contains(path) && !oldPath.contains(path)){
-            builder.add(JGitUtil.createDirCacheEntry(path, tree.getEntryFileMode, tree.getEntryObjectId))
-          }
-          // Retrieve permission if file exists to keep it
-          oldPath.collect { case x if x == path => tree.getEntryFileMode.getBits }
-        }.flatten.headOption
-
-        newPath.foreach { newPath =>
-          builder.add(JGitUtil.createDirCacheEntry(newPath,
-            permission.map { bits => FileMode.fromBits(bits) } getOrElse FileMode.REGULAR_FILE,
-            inserter.insert(Constants.OBJ_BLOB, content.getBytes(charset))))
-        }
-        builder.finish()
-
-        val commitId = JGitUtil.createNewCommit(git, inserter, headTip, builder.getDirCache.writeTree(inserter),
-          headName, loginAccount.fullName, loginAccount.mailAddress, message)
-
-        inserter.flush()
-        inserter.close()
-
-        // update refs
-        val refUpdate = git.getRepository.updateRef(headName)
-        refUpdate.setNewObjectId(commitId)
-        refUpdate.setForceUpdate(false)
-        refUpdate.setRefLogIdent(new PersonIdent(loginAccount.fullName, loginAccount.mailAddress))
-        //refUpdate.setRefLogMessage("merged", true)
-        refUpdate.update()
-
-        // update pull request
-        updatePullRequests(repository.owner, repository.name, branch)
-
-        // record activity
-        val commitInfo = new CommitInfo(JGitUtil.getRevCommitFromId(git, commitId))
-        recordPushActivity(repository.owner, repository.name, loginAccount.userName, branch, List(commitInfo))
-
-        // create issue comment by commit message
-        createIssueComment(repository.owner, repository.name, commitInfo)
-
-        // close issue by commit message
-        closeIssuesFromMessage(message, loginAccount.userName, repository.owner, repository.name)
-
-        // call web hook
-        callPullRequestWebHookByRequestBranch("synchronize", repository, branch, context.baseUrl, loginAccount)
-        val commit = new JGitUtil.CommitInfo(JGitUtil.getRevCommitFromId(git, commitId))
-        callWebHookOf(repository.owner, repository.name, WebHook.Push) {
-          getAccountByUserName(repository.owner).map{ ownerAccount =>
-            WebHookPushPayload(git, loginAccount, headName, repository, List(commit), ownerAccount,
-                               oldId = headTip, newId = commitId)
-          }
-        }
-      }
-    }
-  }
-
  private def archiveRepository(name: String, suffix: String, repository: RepositoryService.RepositoryInfo): Unit = {
    val revision = name.stripSuffix(suffix)

@@ -705,6 +827,26 @@ trait RepositoryViewerControllerBase extends ControllerBase {
  private def isEditable(owner: String, repository: String, author: String)(implicit context: Context): Boolean =
    hasDeveloperRole(owner, repository, context.loginAccount) || author == context.loginAccount.get.userName

+  private def conflict: Constraint = new Constraint(){
+    override def validate(name: String, value: String, messages: Messages): Option[String] = {
+      val owner      = params("owner")
+      val repository = params("repository")
+      val branch     = params("branch")
+
+      LockUtil.lock(s"${owner}/${repository}") {
+        using(Git.open(getRepositoryDir(owner, repository))) { git =>
+          val headName = s"refs/heads/${branch}"
+          val headTip = git.getRepository.resolve(headName)
+          if(headTip.getName != value){
+            Some("Someone pushed new commits before you. Please reload this page and re-apply your changes.")
+          } else {
+            None
+          }
+        }
+      }
+    }
+  }
+
  override protected def renderUncaughtException(e: Throwable)(implicit request: HttpServletRequest, response: HttpServletResponse): Unit = {
    e.printStackTrace()
  }
--- a/src/main/scala/gitbucket/core/controller/SystemSettingsController.scala
+++ b/src/main/scala/gitbucket/core/controller/SystemSettingsController.scala
@@ -6,7 +6,7 @@ import gitbucket.core.admin.html
 import gitbucket.core.service.{AccountService, RepositoryService, SystemSettingsService}
 import gitbucket.core.util.{AdminAuthenticator, Mailer}
 import gitbucket.core.ssh.SshServer
-import gitbucket.core.plugin.PluginRegistry
+import gitbucket.core.plugin.{PluginInfoBase, PluginRegistry, PluginRepository}
 import SystemSettingsService._
 import gitbucket.core.util.Implicits._
 import gitbucket.core.util.SyntaxSugars._
@@ -15,6 +15,10 @@ import gitbucket.core.util.StringUtil._
 import io.github.gitbucket.scalatra.forms._
 import org.apache.commons.io.{FileUtils, IOUtils}
 import org.scalatra.i18n.Messages
+import com.github.zafarkhaja.semver.{Version => Semver}
+import gitbucket.core.GitBucketCoreModule
+import scala.collection.JavaConverters._
+

 class SystemSettingsController extends SystemSettingsControllerBase
  with AccountService with RepositoryService with AdminAuthenticator
@@ -106,7 +110,7 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {

  val newUserForm = mapping(
    "userName"    -> trim(label("Username"     ,text(required, maxlength(100), identifier, uniqueUserName, reservedNames))),
-    "password"    -> trim(label("Password"     ,text(required, maxlength(20)))),
+    "password"    -> trim(label("Password"     ,text(required, maxlength(20), password))),
    "fullName"    -> trim(label("Full Name"    ,text(required, maxlength(100)))),
    "mailAddress" -> trim(label("Mail Address" ,text(required, maxlength(100), uniqueMailAddress()))),
    "isAdmin"     -> trim(label("User Type"    ,boolean())),
@@ -117,7 +121,7 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {

  val editUserForm = mapping(
    "userName"    -> trim(label("Username"     ,text(required, maxlength(100), identifier))),
-    "password"    -> trim(label("Password"     ,optional(text(maxlength(20))))),
+    "password"    -> trim(label("Password"     ,optional(text(maxlength(20), password)))),
    "fullName"    -> trim(label("Full Name"    ,text(required, maxlength(100)))),
    "mailAddress" -> trim(label("Mail Address" ,text(required, maxlength(100), uniqueMailAddress("userName")))),
    "isAdmin"     -> trim(label("User Type"    ,boolean())),
@@ -181,7 +185,71 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {
  })

  get("/admin/plugins")(adminOnly {
-    html.plugins(PluginRegistry().getPlugins())
+    // Installed plugins
+    val enabledPlugins = PluginRegistry().getPlugins()
+
+    val gitbucketVersion = Semver.valueOf(GitBucketCoreModule.getVersions.asScala.last.getVersion)
+
+    // Plugins in the local repository
+    val repositoryPlugins = PluginRepository.getPlugins()
+      .filterNot { meta =>
+        enabledPlugins.exists { plugin => plugin.pluginId == meta.id &&
+          Semver.valueOf(plugin.pluginVersion).greaterThanOrEqualTo(Semver.valueOf(meta.latestVersion.version))
+        }
+      }.map { meta =>
+        (meta, meta.versions.reverse.find { version => gitbucketVersion.satisfies(version.range) })
+      }.collect { case (meta, Some(version)) =>
+        new PluginInfoBase(
+          pluginId      = meta.id,
+          pluginName    = meta.name,
+          pluginVersion = version.version,
+          description   = meta.description
+        )
+      }
+
+    // Merge
+    val plugins = enabledPlugins.map((_, true)) ++ repositoryPlugins.map((_, false))
+
+    html.plugins(plugins, flash.get("info"))
+  })
+
+  post("/admin/plugins/_reload")(adminOnly {
+    PluginRegistry.reload(request.getServletContext(), loadSystemSettings(), request2Session(request).conn)
+    flash += "info" -> "All plugins were reloaded."
+    redirect("/admin/plugins")
+  })
+
+  post("/admin/plugins/:pluginId/:version/_uninstall")(adminOnly {
+    val pluginId = params("pluginId")
+    val version  = params("version")
+    PluginRegistry().getPlugins()
+      .collect { case plugin if (plugin.pluginId == pluginId && plugin.pluginVersion == version) => plugin }
+      .foreach { _ =>
+        PluginRegistry.uninstall(pluginId, request.getServletContext, loadSystemSettings(), request2Session(request).conn)
+        flash += "info" -> s"${pluginId} was uninstalled."
+      }
+    redirect("/admin/plugins")
+  })
+
+  post("/admin/plugins/:pluginId/:version/_install")(adminOnly {
+    val pluginId = params("pluginId")
+    val version  = params("version")
+    /// TODO!!!!
+    PluginRepository.getPlugins()
+      .collect { case meta if meta.id == pluginId => (meta, meta.versions.find(_.version == version) )}
+      .foreach { case (meta, version) =>
+        version.foreach { version =>
+          // TODO Install version!
+          PluginRegistry.install(
+            new java.io.File(PluginHome, s".repository/${version.file}"),
+            request.getServletContext,
+            loadSystemSettings(),
+            request2Session(request).conn
+          )
+          flash += "info" -> s"${pluginId} was installed."
+        }
+      }
+    redirect("/admin/plugins")
  })


@@ -225,7 +293,7 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {
          //          FileUtils.deleteDirectory(getWikiRepositoryDir(userName, repositoryName))
          //          FileUtils.deleteDirectory(getTemporaryDir(userName, repositoryName))
          //        }
-          // Remove from GROUP_MEMBER, COLLABORATOR and REPOSITORY
+          // Remove from GROUP_MEMBER and COLLABORATOR
          removeUserRelatedData(userName)
        }

@@ -239,6 +307,10 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {
          isRemoved    = form.isRemoved))

        updateImage(userName, form.fileId, form.clearImage)
+
+        // call hooks
+        if(form.isRemoved) PluginRegistry().getAccountHooks.foreach(_.deleted(userName))
+
        redirect("/admin/users")
      }
    } getOrElse NotFound()
@@ -277,13 +349,13 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {
        if(form.isRemoved){
          // Remove from GROUP_MEMBER
          updateGroupMembers(form.groupName, Nil)
-          // Remove repositories
-          getRepositoryNamesOfUser(form.groupName).foreach { repositoryName =>
-            deleteRepository(groupName, repositoryName)
-            FileUtils.deleteDirectory(getRepositoryDir(groupName, repositoryName))
-            FileUtils.deleteDirectory(getWikiRepositoryDir(groupName, repositoryName))
-            FileUtils.deleteDirectory(getTemporaryDir(groupName, repositoryName))
-          }
+//          // Remove repositories
+//          getRepositoryNamesOfUser(form.groupName).foreach { repositoryName =>
+//            deleteRepository(groupName, repositoryName)
+//            FileUtils.deleteDirectory(getRepositoryDir(groupName, repositoryName))
+//            FileUtils.deleteDirectory(getWikiRepositoryDir(groupName, repositoryName))
+//            FileUtils.deleteDirectory(getTemporaryDir(groupName, repositoryName))
+//          }
        } else {
          // Update GROUP_MEMBER
          updateGroupMembers(form.groupName, members)
--- a/src/main/scala/gitbucket/core/controller/WikiController.scala
+++ b/src/main/scala/gitbucket/core/controller/WikiController.scala
@@ -1,8 +1,10 @@
 package gitbucket.core.controller

+import gitbucket.core.model.WebHook
 import gitbucket.core.service.RepositoryService.RepositoryInfo
+import gitbucket.core.service.WebHookService.WebHookGollumPayload
 import gitbucket.core.wiki.html
-import gitbucket.core.service.{AccountService, ActivityService, RepositoryService, WikiService}
+import gitbucket.core.service._
 import gitbucket.core.util._
 import gitbucket.core.util.StringUtil._
 import gitbucket.core.util.SyntaxSugars._
@@ -13,11 +15,12 @@ import org.eclipse.jgit.api.Git
 import org.scalatra.i18n.Messages

 class WikiController extends WikiControllerBase
-  with WikiService with RepositoryService with AccountService with ActivityService
+  with WikiService with RepositoryService with AccountService with ActivityService with WebHookService
  with ReadableUsersAuthenticator with ReferrerAuthenticator

 trait WikiControllerBase extends ControllerBase {
-  self: WikiService with RepositoryService with ActivityService with ReadableUsersAuthenticator with ReferrerAuthenticator =>
+  self: WikiService with RepositoryService with AccountService with ActivityService with WebHookService
+    with ReadableUsersAuthenticator with ReferrerAuthenticator =>

  case class WikiPageEditForm(pageName: String, content: String, message: Option[String], currentPageName: String, id: String)

@@ -136,6 +139,11 @@ trait WikiControllerBase extends ControllerBase {
        ).map { commitId =>
          updateLastActivityDate(repository.owner, repository.name)
          recordEditWikiPageActivity(repository.owner, repository.name, loginAccount.userName, form.pageName, commitId)
+          callWebHookOf(repository.owner, repository.name, WebHook.Gollum){
+            getAccountByUserName(repository.owner).map { repositoryUser =>
+              WebHookGollumPayload("edited", form.pageName, commitId, repository, repositoryUser, loginAccount)
+            }
+          }
        }
        if(notReservedPageName(form.pageName)) {
          redirect(s"/${repository.owner}/${repository.name}/wiki/${StringUtil.urlEncode(form.pageName)}")
@@ -155,11 +163,24 @@ trait WikiControllerBase extends ControllerBase {
  post("/:owner/:repository/wiki/_new", newForm)(readableUsersOnly { (form, repository) =>
    if(isEditable(repository)){
      defining(context.loginAccount.get){ loginAccount =>
-        saveWikiPage(repository.owner, repository.name, form.currentPageName, form.pageName,
-          form.content, loginAccount, form.message.getOrElse(""), None)
-
-        updateLastActivityDate(repository.owner, repository.name)
-        recordCreateWikiPageActivity(repository.owner, repository.name, loginAccount.userName, form.pageName)
+        saveWikiPage(
+          repository.owner,
+          repository.name,
+          form.currentPageName,
+          form.pageName,
+          form.content,
+          loginAccount,
+          form.message.getOrElse(""),
+          None
+        ).map { commitId =>
+          updateLastActivityDate(repository.owner, repository.name)
+          recordCreateWikiPageActivity(repository.owner, repository.name, loginAccount.userName, form.pageName)
+          callWebHookOf(repository.owner, repository.name, WebHook.Gollum){
+            getAccountByUserName(repository.owner).map { repositoryUser =>
+              WebHookGollumPayload("created", form.pageName, commitId, repository, repositoryUser, loginAccount)
+            }
+          }
+        }

        if(notReservedPageName(form.pageName)) {
          redirect(s"/${repository.owner}/${repository.name}/wiki/${StringUtil.urlEncode(form.pageName)}")
--- a/src/main/scala/gitbucket/core/model/AccountWebHook.scala
+++ b/src/main/scala/gitbucket/core/model/AccountWebHook.scala
@@ -0,0 +1,25 @@
+package gitbucket.core.model
+
+trait AccountWebHookComponent extends TemplateComponent { self: Profile =>
+  import profile.api._
+
+  private implicit val whContentTypeColumnType = MappedColumnType.base[WebHookContentType, String](whct => whct.code , code => WebHookContentType.valueOf(code))
+
+  lazy val AccountWebHooks = TableQuery[AccountWebHooks]
+
+  class AccountWebHooks(tag: Tag) extends Table[AccountWebHook](tag, "ACCOUNT_WEB_HOOK") with BasicTemplate {
+    val url = column[String]("URL")
+    val token = column[Option[String]]("TOKEN")
+    val ctype = column[WebHookContentType]("CTYPE")
+    def * = (userName, url, ctype, token) <> ((AccountWebHook.apply _).tupled, AccountWebHook.unapply)
+
+    def byPrimaryKey(userName: String, url: String) = (this.userName === userName.bind) && (this.url === url.bind)
+  }
+}
+
+case class AccountWebHook(
+  userName: String,
+  url: String,
+  ctype: WebHookContentType,
+  token: Option[String]
+) extends WebHook
--- a/src/main/scala/gitbucket/core/model/AccountWebHookEvent.scala
+++ b/src/main/scala/gitbucket/core/model/AccountWebHookEvent.scala
@@ -0,0 +1,34 @@
+package gitbucket.core.model
+
+trait AccountWebHookEventComponent extends TemplateComponent {
+  self: Profile =>
+
+  import profile.api._
+  import gitbucket.core.model.Profile.AccountWebHooks
+
+  lazy val AccountWebHookEvents = TableQuery[AccountWebHookEvents]
+
+  class AccountWebHookEvents(tag: Tag) extends Table[AccountWebHookEvent](tag, "ACCOUNT_WEB_HOOK_EVENT") with BasicTemplate {
+    val url = column[String]("URL")
+    val event = column[WebHook.Event]("EVENT")
+
+    def * = (userName, url, event)  <> ((AccountWebHookEvent.apply _).tupled, AccountWebHookEvent.unapply)
+
+    def byAccountWebHook(userName: String, url: String) = (this.userName === userName.bind) && (this.url === url.bind)
+
+    def byAccountWebHook(owner: Rep[String], url: Rep[String]) =
+      (this.userName === userName) && (this.url === url)
+
+    def byAccountWebHook(webhook: AccountWebHooks) =
+      (this.userName === webhook.userName) && (this.url === webhook.url)
+
+    def byPrimaryKey(userName: String, url: String, event: WebHook.Event) =
+      (this.userName === userName.bind) && (this.url === url.bind) && (this.event === event.bind)
+  }
+}
+
+case class AccountWebHookEvent(
+                         userName: String,
+                         url: String,
+                         event: WebHook.Event
+                       )
--- a/src/main/scala/gitbucket/core/model/BasicTemplate.scala
+++ b/src/main/scala/gitbucket/core/model/BasicTemplate.scala
@@ -7,6 +7,10 @@ protected[model] trait TemplateComponent { self: Profile =>
    val userName = column[String]("USER_NAME")
    val repositoryName = column[String]("REPOSITORY_NAME")

+    def byAccount(userName: String) = (this.userName === userName.bind)
+
+    def byAccount(userName: Rep[String]) = (this.userName === userName)
+
    def byRepository(owner: String, repository: String) =
      (userName === owner.bind) && (repositoryName === repository.bind)

@@ -38,6 +42,20 @@ protected[model] trait TemplateComponent { self: Profile =>
      byRepository(owner, repository) && (this.labelName === labelName.bind)
  }

+  trait PriorityTemplate extends BasicTemplate { self: Table[_] =>
+    val priorityId = column[Int]("PRIORITY_ID")
+    val priorityName = column[String]("PRIORITY_NAME")
+
+    def byPriority(owner: String, repository: String, priorityId: Int) =
+      byRepository(owner, repository) && (this.priorityId === priorityId.bind)
+
+    def byPriority(userName: Rep[String], repositoryName: Rep[String], priorityId: Rep[Int]) =
+      byRepository(userName, repositoryName) && (this.priorityId === priorityId)
+
+    def byPriority(owner: String, repository: String, priorityName: String) =
+      byRepository(owner, repository) && (this.priorityName === priorityName.bind)
+  }
+
  trait MilestoneTemplate extends BasicTemplate { self: Table[_] =>
    val milestoneId = column[Int]("MILESTONE_ID")

--- a/src/main/scala/gitbucket/core/model/Issue.scala
+++ b/src/main/scala/gitbucket/core/model/Issue.scala
@@ -13,12 +13,13 @@ trait IssueComponent extends TemplateComponent { self: Profile =>
    def byPrimaryKey(owner: String, repository: String) = byRepository(owner, repository)
  }

-  class IssueOutline(tag: Tag) extends Table[(String, String, Int, Int)](tag, "ISSUE_OUTLINE_VIEW") with IssueTemplate {
+  class IssueOutline(tag: Tag) extends Table[(String, String, Int, Int, Int)](tag, "ISSUE_OUTLINE_VIEW") with IssueTemplate {
    val commentCount = column[Int]("COMMENT_COUNT")
-    def * = (userName, repositoryName, issueId, commentCount)
+    val priority = column[Int]("PRIORITY")
+    def * = (userName, repositoryName, issueId, commentCount, priority)
  }

-  class Issues(tag: Tag) extends Table[Issue](tag, "ISSUE") with IssueTemplate with MilestoneTemplate {
+  class Issues(tag: Tag) extends Table[Issue](tag, "ISSUE") with IssueTemplate with MilestoneTemplate with PriorityTemplate {
    val openedUserName = column[String]("OPENED_USER_NAME")
    val assignedUserName = column[String]("ASSIGNED_USER_NAME")
    val title = column[String]("TITLE")
@@ -27,7 +28,7 @@ trait IssueComponent extends TemplateComponent { self: Profile =>
    val registeredDate = column[java.util.Date]("REGISTERED_DATE")
    val updatedDate = column[java.util.Date]("UPDATED_DATE")
    val pullRequest = column[Boolean]("PULL_REQUEST")
-    def * = (userName, repositoryName, issueId, openedUserName, milestoneId.?, assignedUserName.?, title, content.?, closed, registeredDate, updatedDate, pullRequest) <> (Issue.tupled, Issue.unapply)
+    def * = (userName, repositoryName, issueId, openedUserName, milestoneId.?, priorityId.?, assignedUserName.?, title, content.?, closed, registeredDate, updatedDate, pullRequest) <> (Issue.tupled, Issue.unapply)

    def byPrimaryKey(owner: String, repository: String, issueId: Int) = byIssue(owner, repository, issueId)
  }
@@ -39,6 +40,7 @@ case class Issue(
  issueId: Int,
  openedUserName: String,
  milestoneId: Option[Int],
+  priorityId: Option[Int],
  assignedUserName: Option[String],
  title: String,
  content: Option[String],
--- a/src/main/scala/gitbucket/core/model/Priorities.scala
+++ b/src/main/scala/gitbucket/core/model/Priorities.scala
@@ -0,0 +1,43 @@
+package gitbucket.core.model
+
+trait PriorityComponent extends TemplateComponent { self: Profile =>
+  import profile.api._
+
+  lazy val Priorities = TableQuery[Priorities]
+
+  class Priorities(tag: Tag) extends Table[Priority](tag, "PRIORITY") with PriorityTemplate {
+    override val priorityId = column[Int]("PRIORITY_ID", O AutoInc)
+    override val priorityName = column[String]("PRIORITY_NAME")
+    val description = column[String]("DESCRIPTION")
+    val ordering = column[Int]("ORDERING")
+    val isDefault = column[Boolean]("IS_DEFAULT")
+    val color = column[String]("COLOR")
+    def * = (userName, repositoryName, priorityId, priorityName, description.?, isDefault, ordering, color) <> (Priority.tupled, Priority.unapply)
+
+    def byPrimaryKey(owner: String, repository: String, priorityId: Int) = byPriority(owner, repository, priorityId)
+    def byPrimaryKey(userName: Rep[String], repositoryName: Rep[String], priorityId: Rep[Int]) = byPriority(userName, repositoryName, priorityId)
+  }
+}
+
+case class Priority (
+  userName: String,
+  repositoryName: String,
+  priorityId: Int = 0,
+  priorityName: String,
+  description: Option[String],
+  isDefault: Boolean,
+  ordering: Int = 0,
+  color: String){
+
+  val fontColor = {
+    val r = color.substring(0, 2)
+    val g = color.substring(2, 4)
+    val b = color.substring(4, 6)
+
+    if(Integer.parseInt(r, 16) + Integer.parseInt(g, 16) + Integer.parseInt(b, 16) > 408){
+      "000000"
+    } else {
+      "ffffff"
+    }
+  }
+}
--- a/src/main/scala/gitbucket/core/model/Profile.scala
+++ b/src/main/scala/gitbucket/core/model/Profile.scala
@@ -15,6 +15,11 @@ trait Profile {
    t => new java.util.Date(t.getTime)
  )

+  /**
+    * WebHookBase.Event Column Types
+    */
+  implicit val eventColumnType = MappedColumnType.base[WebHook.Event, String](_.name, WebHook.Event.valueOf(_))
+
  /**
   * Extends Column to add conditional condition
   */
@@ -47,12 +52,15 @@ trait CoreProfile extends ProfileProvider with Profile
  with IssueCommentComponent
  with IssueLabelComponent
  with LabelComponent
+  with PriorityComponent
  with MilestoneComponent
  with PullRequestComponent
  with RepositoryComponent
  with SshKeyComponent
-  with WebHookComponent
-  with WebHookEventComponent
+  with RepositoryWebHookComponent
+  with RepositoryWebHookEventComponent
+  with AccountWebHookComponent
+  with AccountWebHookEventComponent
  with ProtectedBranchComponent
  with DeployKeyComponent

--- a/src/main/scala/gitbucket/core/model/RepositoryWebHook.scala
+++ b/src/main/scala/gitbucket/core/model/RepositoryWebHook.scala
@@ -0,0 +1,27 @@
+package gitbucket.core.model
+
+trait RepositoryWebHookComponent extends TemplateComponent { self: Profile =>
+  import profile.api._
+
+  implicit val whContentTypeColumnType = MappedColumnType.base[WebHookContentType, String](whct => whct.code , code => WebHookContentType.valueOf(code))
+
+  lazy val RepositoryWebHooks = TableQuery[RepositoryWebHooks]
+
+  class RepositoryWebHooks(tag: Tag) extends Table[RepositoryWebHook](tag, "WEB_HOOK") with BasicTemplate {
+    val url = column[String]("URL")
+    val token = column[Option[String]]("TOKEN")
+    val ctype = column[WebHookContentType]("CTYPE")
+    def * = (userName, repositoryName, url, ctype, token) <> ((RepositoryWebHook.apply _).tupled, RepositoryWebHook.unapply)
+
+    def byPrimaryKey(owner: String, repository: String, url: String) = byRepository(owner, repository) && (this.url === url.bind)
+  }
+}
+
+
+case class RepositoryWebHook(
+  userName: String,
+  repositoryName: String,
+  url: String,
+  ctype: WebHookContentType,
+  token: Option[String]
+) extends WebHook
--- a/src/main/scala/gitbucket/core/model/RepositoryWebHookEvent.scala
+++ b/src/main/scala/gitbucket/core/model/RepositoryWebHookEvent.scala
@@ -0,0 +1,28 @@
+package gitbucket.core.model
+
+trait RepositoryWebHookEventComponent extends TemplateComponent { self: Profile =>
+  import profile.api._
+  import gitbucket.core.model.Profile.RepositoryWebHooks
+
+  lazy val RepositoryWebHookEvents = TableQuery[RepositoryWebHookEvents]
+
+  class RepositoryWebHookEvents(tag: Tag) extends Table[RepositoryWebHookEvent](tag, "WEB_HOOK_EVENT") with BasicTemplate {
+    val url = column[String]("URL")
+    val event = column[WebHook.Event]("EVENT")
+    def * = (userName, repositoryName, url, event) <> ((RepositoryWebHookEvent.apply _).tupled, RepositoryWebHookEvent.unapply)
+
+    def byRepositoryWebHook(owner: String, repository: String, url: String) = byRepository(owner, repository) && (this.url === url.bind)
+    def byRepositoryWebHook(owner: Rep[String], repository: Rep[String], url: Rep[String]) =
+      byRepository(userName, repositoryName) && (this.url === url)
+    def byRepositoryWebHook(webhook: RepositoryWebHooks) =
+      byRepository(webhook.userName, webhook.repositoryName) && (this.url === webhook.url)
+    def byPrimaryKey(owner: String, repository: String, url: String, event: WebHook.Event) = byRepositoryWebHook(owner, repository, url) && (this.event === event.bind)
+  }
+}
+
+case class RepositoryWebHookEvent(
+  userName: String,
+  repositoryName: String,
+  url: String,
+  event: WebHook.Event
+)
--- a/src/main/scala/gitbucket/core/model/WebHook.scala
+++ b/src/main/scala/gitbucket/core/model/WebHook.scala
@@ -1,22 +1,5 @@
 package gitbucket.core.model

-trait WebHookComponent extends TemplateComponent { self: Profile =>
-  import profile.api._
-
-  implicit val whContentTypeColumnType = MappedColumnType.base[WebHookContentType, String](whct => whct.code , code => WebHookContentType.valueOf(code))
-  
-  lazy val WebHooks = TableQuery[WebHooks]
-
-  class WebHooks(tag: Tag) extends Table[WebHook](tag, "WEB_HOOK") with BasicTemplate {
-    val url = column[String]("URL")
-    val token = column[Option[String]]("TOKEN")
-    val ctype = column[WebHookContentType]("CTYPE")
-    def * = (userName, repositoryName, url, ctype, token) <> ((WebHook.apply _).tupled, WebHook.unapply)
-
-    def byPrimaryKey(owner: String, repository: String, url: String) = byRepository(owner, repository) && (this.url === url.bind)
-  }
-}
-
 abstract sealed case class WebHookContentType(code: String, ctype: String)

 object WebHookContentType {
@@ -33,13 +16,11 @@ object WebHookContentType {
  def valueOpt(code: String): Option[WebHookContentType] = map.get(code)
 }

-case class WebHook(
-  userName: String,
-  repositoryName: String,
-  url: String,
-  ctype: WebHookContentType,
-  token: Option[String]
-)
+trait WebHook{
+  val url: String
+  val ctype: WebHookContentType
+  val token: Option[String]
+}

 object WebHook {
  abstract sealed class Event(val name: String)
@@ -86,6 +67,7 @@ object WebHook {
      TeamAdd,
      Watch
    )
+
    private val map: Map[String,Event] = values.map(e => e.name -> e).toMap
    def valueOf(name: String): Event = map(name)
    def valueOpt(name: String): Option[Event] = map.get(name)
--- a/src/main/scala/gitbucket/core/model/WebHookEvent.scala
+++ b/src/main/scala/gitbucket/core/model/WebHookEvent.scala
@@ -1,30 +0,0 @@
-package gitbucket.core.model
-
-trait WebHookEventComponent extends TemplateComponent { self: Profile =>
-  import profile.api._
-  import gitbucket.core.model.Profile.WebHooks
-
-  lazy val WebHookEvents = TableQuery[WebHookEvents]
-
-  implicit val typedType = MappedColumnType.base[WebHook.Event, String](_.name, WebHook.Event.valueOf(_))
-
-  class WebHookEvents(tag: Tag) extends Table[WebHookEvent](tag, "WEB_HOOK_EVENT") with BasicTemplate {
-    val url = column[String]("URL")
-    val event = column[WebHook.Event]("EVENT")
-    def * = (userName, repositoryName, url, event) <> ((WebHookEvent.apply _).tupled, WebHookEvent.unapply)
-
-    def byWebHook(owner: String, repository: String, url: String) = byRepository(owner, repository) && (this.url === url.bind)
-    def byWebHook(owner: Rep[String], repository: Rep[String], url: Rep[String]) =
-      byRepository(userName, repositoryName) && (this.url === url)
-    def byWebHook(webhook: WebHooks) =
-      byRepository(webhook.userName, webhook.repositoryName) && (this.url === webhook.url)
-    def byPrimaryKey(owner: String, repository: String, url: String, event: WebHook.Event) = byWebHook(owner, repository, url) && (this.event === event.bind)
-  }
-}
-
-case class WebHookEvent(
-  userName: String,
-  repositoryName: String,
-  url: String,
-  event: WebHook.Event
-)
--- a/src/main/scala/gitbucket/core/plugin/AccountHook.scala
+++ b/src/main/scala/gitbucket/core/plugin/AccountHook.scala
@@ -0,0 +1,10 @@
+package gitbucket.core.plugin
+
+import gitbucket.core.model.Profile._
+import profile.api._
+
+trait AccountHook {
+
+  def deleted(userName: String)(implicit session: Session): Unit = ()
+
+}
--- a/src/main/scala/gitbucket/core/plugin/IssueHook.scala
+++ b/src/main/scala/gitbucket/core/plugin/IssueHook.scala
@@ -0,0 +1,20 @@
+package gitbucket.core.plugin
+
+import gitbucket.core.controller.Context
+import gitbucket.core.model.Issue
+import gitbucket.core.service.RepositoryService.RepositoryInfo
+
+trait IssueHook {
+
+  def created(issue: Issue, repository: RepositoryInfo)(implicit context: Context): Unit = ()
+  def addedComment(commentId: Int, content: String, issue: Issue, repository: RepositoryInfo)(implicit context: Context): Unit = ()
+  def closed(issue: Issue, repository: RepositoryInfo)(implicit context: Context): Unit = ()
+  def reopened(issue: Issue, repository: RepositoryInfo)(implicit context: Context): Unit = ()
+
+}
+
+trait PullRequestHook extends IssueHook {
+
+  def merged(issue: Issue, repository: RepositoryInfo)(implicit context: Context): Unit = ()
+
+}
--- a/src/main/scala/gitbucket/core/plugin/Plugin.scala
+++ b/src/main/scala/gitbucket/core/plugin/Plugin.scala
@@ -1,12 +1,14 @@
 package gitbucket.core.plugin

 import javax.servlet.ServletContext
+
 import gitbucket.core.controller.{Context, ControllerBase}
-import gitbucket.core.model.Account
+import gitbucket.core.model.{Account, Issue}
 import gitbucket.core.service.RepositoryService.RepositoryInfo
 import gitbucket.core.service.SystemSettingsService.SystemSettings
 import gitbucket.core.util.SyntaxSugars._
 import io.github.gitbucket.solidbase.model.Version
+import play.twirl.api.Html

 /**
 * Trait for define plugin interface.
@@ -69,6 +71,16 @@ abstract class Plugin {
   */
  def repositoryRoutings(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[GitRepositoryRouting] = Nil

+  /**
+   * Override to add account hooks.
+   */
+  val accountHooks: Seq[AccountHook] = Nil
+
+  /**
+   * Override to add account hooks.
+   */
+  def accountHooks(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[AccountHook] = Nil
+
  /**
   * Override to add receive hooks.
   */
@@ -89,6 +101,36 @@ abstract class Plugin {
   */
  def repositoryHooks(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[RepositoryHook] = Nil

+  /**
+   * Override to add issue hooks.
+   */
+  val issueHooks: Seq[IssueHook] = Nil
+
+  /**
+   * Override to add issue hooks.
+   */
+  def issueHooks(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[IssueHook] = Nil
+
+  /**
+   * Override to add pull request hooks.
+   */
+  val pullRequestHooks: Seq[PullRequestHook] = Nil
+
+  /**
+   * Override to add pull request hooks.
+   */
+  def pullRequestHooks(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[PullRequestHook] = Nil
+
+  /**
+   * Override to add repository headers.
+   */
+  val repositoryHeaders: Seq[(RepositoryInfo, Context) => Option[Html]] = Nil
+
+  /**
+   * Override to add repository headers.
+   */
+  def repositoryHeaders(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[(RepositoryInfo, Context) => Option[Html]] = Nil
+
  /**
   * Override to add global menus.
   */
@@ -159,6 +201,16 @@ abstract class Plugin {
   */
  def dashboardTabs(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[(Context) => Option[Link]] = Nil

+  /**
+   * Override to add issue sidebars.
+   */
+  val issueSidebars: Seq[(Issue, RepositoryInfo, Context) => Option[Html]] = Nil
+
+  /**
+   * Override to add issue sidebars.
+   */
+  def issueSidebars(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Seq[(Issue, RepositoryInfo, Context) => Option[Html]] = Nil
+
  /**
   * Override to add assets mappings.
   */
@@ -209,12 +261,24 @@ abstract class Plugin {
    (repositoryRoutings ++ repositoryRoutings(registry, context, settings)).foreach { routing =>
      registry.addRepositoryRouting(routing)
    }
+    (accountHooks ++ accountHooks(registry, context, settings)).foreach { accountHook =>
+      registry.addAccountHook(accountHook)
+    }
    (receiveHooks ++ receiveHooks(registry, context, settings)).foreach { receiveHook =>
      registry.addReceiveHook(receiveHook)
    }
    (repositoryHooks ++ repositoryHooks(registry, context, settings)).foreach { repositoryHook =>
      registry.addRepositoryHook(repositoryHook)
    }
+    (issueHooks ++ issueHooks(registry, context, settings)).foreach { issueHook =>
+      registry.addIssueHook(issueHook)
+    }
+    (pullRequestHooks ++ pullRequestHooks(registry, context, settings)).foreach { pullRequestHook =>
+      registry.addPullRequestHook(pullRequestHook)
+    }
+    (repositoryHeaders ++ repositoryHeaders(registry, context, settings)).foreach { repositoryHeader =>
+      registry.addRepositoryHeader(repositoryHeader)
+    }
    (globalMenus ++ globalMenus(registry, context, settings)).foreach { globalMenu =>
      registry.addGlobalMenu(globalMenu)
    }
@@ -236,6 +300,9 @@ abstract class Plugin {
    (dashboardTabs ++ dashboardTabs(registry, context, settings)).foreach { dashboardTab =>
      registry.addDashboardTab(dashboardTab)
    }
+    (issueSidebars ++ issueSidebars(registry, context, settings)).foreach { issueSidebarComponent =>
+      registry.addIssueSidebar(issueSidebarComponent)
+    }
    (assetsMappings ++ assetsMappings(registry, context, settings)).foreach { assetMapping =>
      registry.addAssetsMapping((assetMapping._1, assetMapping._2, getClass.getClassLoader))
    }
@@ -248,11 +315,17 @@ abstract class Plugin {
  }

  /**
-   * This method is invoked in shutdown of plugin system.
+   * This method is invoked when the plugin system is shutting down.
   * If the plugin has any resources, release them in this method.
   */
  def shutdown(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Unit = {}

+//  /**
+//   * This method is invoked when this plugin is uninstalled.
+//   * Cleanup database or any other resources in this method if necessary.
+//   */
+//  def uninstall(registry: PluginRegistry, context: ServletContext, settings: SystemSettings): Unit = {}
+
  /**
   * Helper method to get a resource from classpath.
   */
--- a/src/main/scala/gitbucket/core/plugin/PluginRegistory.scala
+++ b/src/main/scala/gitbucket/core/plugin/PluginRegistory.scala
@@ -2,13 +2,18 @@ package gitbucket.core.plugin

 import java.io.{File, FilenameFilter, InputStream}
 import java.net.URLClassLoader
+import java.nio.file.{Files, Paths, StandardWatchEventKinds}
 import java.util.Base64
+import java.util.concurrent.atomic.AtomicBoolean
+import java.util.concurrent.ConcurrentLinkedQueue
+import java.util.concurrent.ConcurrentHashMap
 import javax.servlet.ServletContext

 import gitbucket.core.controller.{Context, ControllerBase}
-import gitbucket.core.model.Account
+import gitbucket.core.model.{Account, Issue}
 import gitbucket.core.service.ProtectedBranchService.ProtectedBranchReceiveHook
 import gitbucket.core.service.RepositoryService.RepositoryInfo
+import gitbucket.core.service.SystemSettingsService
 import gitbucket.core.service.SystemSettingsService.SystemSettings
 import gitbucket.core.util.SyntaxSugars._
 import gitbucket.core.util.DatabaseConfig
@@ -16,46 +21,53 @@ import gitbucket.core.util.Directory._
 import io.github.gitbucket.solidbase.Solidbase
 import io.github.gitbucket.solidbase.manager.JDBCVersionManager
 import io.github.gitbucket.solidbase.model.Module
+import org.apache.commons.io.FileUtils
 import org.slf4j.LoggerFactory
+import play.twirl.api.Html

-import scala.collection.mutable
-import scala.collection.mutable.ListBuffer
+import scala.collection.JavaConverters._

 class PluginRegistry {

-  private val plugins = new ListBuffer[PluginInfo]
-  private val javaScripts = new ListBuffer[(String, String)]
-  private val controllers = new ListBuffer[(ControllerBase, String)]
-  private val images = mutable.Map[String, String]()
-  private val renderers = mutable.Map[String, Renderer]()
-  renderers ++= Seq(
-    "md" -> MarkdownRenderer, "markdown" -> MarkdownRenderer
-  )
-  private val repositoryRoutings = new ListBuffer[GitRepositoryRouting]
-  private val receiveHooks = new ListBuffer[ReceiveHook]
-  receiveHooks += new ProtectedBranchReceiveHook()
+  private val plugins = new ConcurrentLinkedQueue[PluginInfo]
+  private val javaScripts = new ConcurrentLinkedQueue[(String, String)]
+  private val controllers = new ConcurrentLinkedQueue[(ControllerBase, String)]
+  private val images = new ConcurrentHashMap[String, String]
+  private val renderers = new ConcurrentHashMap[String, Renderer]
+  renderers.put("md", MarkdownRenderer)
+  renderers.put("markdown", MarkdownRenderer)
+  private val repositoryRoutings = new ConcurrentLinkedQueue[GitRepositoryRouting]
+  private val accountHooks = new ConcurrentLinkedQueue[AccountHook]
+  private val receiveHooks = new ConcurrentLinkedQueue[ReceiveHook]
+  receiveHooks.add(new ProtectedBranchReceiveHook())

-  private val repositoryHooks = new ListBuffer[RepositoryHook]
-  private val globalMenus = new ListBuffer[(Context) => Option[Link]]
-  private val repositoryMenus = new ListBuffer[(RepositoryInfo, Context) => Option[Link]]
-  private val repositorySettingTabs = new ListBuffer[(RepositoryInfo, Context) => Option[Link]]
-  private val profileTabs = new ListBuffer[(Account, Context) => Option[Link]]
-  private val systemSettingMenus = new ListBuffer[(Context) => Option[Link]]
-  private val accountSettingMenus = new ListBuffer[(Context) => Option[Link]]
-  private val dashboardTabs = new ListBuffer[(Context) => Option[Link]]
-  private val assetsMappings = new ListBuffer[(String, String, ClassLoader)]
-  private val textDecorators = new ListBuffer[TextDecorator]
+  private val repositoryHooks = new ConcurrentLinkedQueue[RepositoryHook]
+  private val issueHooks = new ConcurrentLinkedQueue[IssueHook]

-  private val suggestionProviders = new ListBuffer[SuggestionProvider]
-  suggestionProviders += new UserNameSuggestionProvider()
+  private val pullRequestHooks = new ConcurrentLinkedQueue[PullRequestHook]

-  def addPlugin(pluginInfo: PluginInfo): Unit = plugins += pluginInfo
+  private val repositoryHeaders = new ConcurrentLinkedQueue[(RepositoryInfo, Context) => Option[Html]]
+  private val globalMenus = new ConcurrentLinkedQueue[(Context) => Option[Link]]
+  private val repositoryMenus = new ConcurrentLinkedQueue[(RepositoryInfo, Context) => Option[Link]]
+  private val repositorySettingTabs = new ConcurrentLinkedQueue[(RepositoryInfo, Context) => Option[Link]]
+  private val profileTabs = new ConcurrentLinkedQueue[(Account, Context) => Option[Link]]
+  private val systemSettingMenus = new ConcurrentLinkedQueue[(Context) => Option[Link]]
+  private val accountSettingMenus = new ConcurrentLinkedQueue[(Context) => Option[Link]]
+  private val dashboardTabs = new ConcurrentLinkedQueue[(Context) => Option[Link]]
+  private val issueSidebars = new ConcurrentLinkedQueue[(Issue, RepositoryInfo, Context) => Option[Html]]
+  private val assetsMappings = new ConcurrentLinkedQueue[(String, String, ClassLoader)]
+  private val textDecorators = new ConcurrentLinkedQueue[TextDecorator]

-  def getPlugins(): List[PluginInfo] = plugins.toList
+  private val suggestionProviders = new ConcurrentLinkedQueue[SuggestionProvider]
+  suggestionProviders.add(new UserNameSuggestionProvider())
+
+  def addPlugin(pluginInfo: PluginInfo): Unit = plugins.add(pluginInfo)
+
+  def getPlugins(): List[PluginInfo] = plugins.asScala.toList

  def addImage(id: String, bytes: Array[Byte]): Unit = {
    val encoded = Base64.getEncoder.encodeToString(bytes)
-    images += ((id, encoded))
+    images.put(id, encoded)
  }

  @deprecated("Use addImage(id: String, bytes: Array[Byte]) instead", "3.4.0")
@@ -68,28 +80,28 @@ class PluginRegistry {
    addImage(id, bytes)
  }

-  def getImage(id: String): String = images(id)
+  def getImage(id: String): String = images.get(id)

-  def addController(path: String, controller: ControllerBase): Unit = controllers += ((controller, path))
+  def addController(path: String, controller: ControllerBase): Unit = controllers.add((controller, path))

  @deprecated("Use addController(path: String, controller: ControllerBase) instead", "3.4.0")
  def addController(controller: ControllerBase, path: String): Unit = addController(path, controller)

-  def getControllers(): Seq[(ControllerBase, String)] = controllers.toSeq
+  def getControllers(): Seq[(ControllerBase, String)] = controllers.asScala.toSeq

-  def addJavaScript(path: String, script: String): Unit = javaScripts += ((path, script))
+  def addJavaScript(path: String, script: String): Unit = javaScripts.add((path, script)) //javaScripts += ((path, script))

-  def getJavaScript(currentPath: String): List[String] = javaScripts.filter(x => currentPath.matches(x._1)).toList.map(_._2)
+  def getJavaScript(currentPath: String): List[String] = javaScripts.asScala.filter(x => currentPath.matches(x._1)).toList.map(_._2)

-  def addRenderer(extension: String, renderer: Renderer): Unit = renderers += ((extension, renderer))
+  def addRenderer(extension: String, renderer: Renderer): Unit = renderers.put(extension, renderer)

-  def getRenderer(extension: String): Renderer = renderers.getOrElse(extension, DefaultRenderer)
+  def getRenderer(extension: String): Renderer = renderers.asScala.getOrElse(extension, DefaultRenderer)

-  def renderableExtensions: Seq[String] = renderers.keys.toSeq
+  def renderableExtensions: Seq[String] = renderers.keys.asScala.toSeq

-  def addRepositoryRouting(routing: GitRepositoryRouting): Unit = repositoryRoutings += routing
+  def addRepositoryRouting(routing: GitRepositoryRouting): Unit = repositoryRoutings.add(routing)

-  def getRepositoryRoutings(): Seq[GitRepositoryRouting] = repositoryRoutings.toSeq
+  def getRepositoryRoutings(): Seq[GitRepositoryRouting] = repositoryRoutings.asScala.toSeq

  def getRepositoryRouting(repositoryPath: String): Option[GitRepositoryRouting] = {
    PluginRegistry().getRepositoryRoutings().find {
@@ -99,53 +111,73 @@ class PluginRegistry {
    }
  }

-  def addReceiveHook(commitHook: ReceiveHook): Unit = receiveHooks += commitHook
+  def addAccountHook(accountHook: AccountHook): Unit = accountHooks.add(accountHook)

-  def getReceiveHooks: Seq[ReceiveHook] = receiveHooks.toSeq
+  def getAccountHooks: Seq[AccountHook] = accountHooks.asScala.toSeq

-  def addRepositoryHook(repositoryHook: RepositoryHook): Unit = repositoryHooks += repositoryHook
+  def addReceiveHook(commitHook: ReceiveHook): Unit = receiveHooks.add(commitHook)

-  def getRepositoryHooks: Seq[RepositoryHook] = repositoryHooks.toSeq
+  def getReceiveHooks: Seq[ReceiveHook] = receiveHooks.asScala.toSeq

-  def addGlobalMenu(globalMenu: (Context) => Option[Link]): Unit = globalMenus += globalMenu
+  def addRepositoryHook(repositoryHook: RepositoryHook): Unit = repositoryHooks.add(repositoryHook)

-  def getGlobalMenus: Seq[(Context) => Option[Link]] = globalMenus.toSeq
+  def getRepositoryHooks: Seq[RepositoryHook] = repositoryHooks.asScala.toSeq

-  def addRepositoryMenu(repositoryMenu: (RepositoryInfo, Context) => Option[Link]): Unit = repositoryMenus += repositoryMenu
+  def addIssueHook(issueHook: IssueHook): Unit = issueHooks.add(issueHook)

-  def getRepositoryMenus: Seq[(RepositoryInfo, Context) => Option[Link]] = repositoryMenus.toSeq
+  def getIssueHooks: Seq[IssueHook] = issueHooks.asScala.toSeq

-  def addRepositorySettingTab(repositorySettingTab: (RepositoryInfo, Context) => Option[Link]): Unit = repositorySettingTabs += repositorySettingTab
+  def addPullRequestHook(pullRequestHook: PullRequestHook): Unit = pullRequestHooks.add(pullRequestHook)

-  def getRepositorySettingTabs: Seq[(RepositoryInfo, Context) => Option[Link]] = repositorySettingTabs.toSeq
+  def getPullRequestHooks: Seq[PullRequestHook] = pullRequestHooks.asScala.toSeq

-  def addProfileTab(profileTab: (Account, Context) => Option[Link]): Unit = profileTabs += profileTab
+  def addRepositoryHeader(repositoryHeader: (RepositoryInfo, Context) => Option[Html]): Unit = repositoryHeaders.add(repositoryHeader)

-  def getProfileTabs: Seq[(Account, Context) => Option[Link]] = profileTabs.toSeq
+  def getRepositoryHeaders: Seq[(RepositoryInfo, Context) => Option[Html]] = repositoryHeaders.asScala.toSeq

-  def addSystemSettingMenu(systemSettingMenu: (Context) => Option[Link]): Unit = systemSettingMenus += systemSettingMenu
+  def addGlobalMenu(globalMenu: (Context) => Option[Link]): Unit = globalMenus.add(globalMenu)

-  def getSystemSettingMenus: Seq[(Context) => Option[Link]] = systemSettingMenus.toSeq
+  def getGlobalMenus: Seq[(Context) => Option[Link]] = globalMenus.asScala.toSeq

-  def addAccountSettingMenu(accountSettingMenu: (Context) => Option[Link]): Unit = accountSettingMenus += accountSettingMenu
+  def addRepositoryMenu(repositoryMenu: (RepositoryInfo, Context) => Option[Link]): Unit = repositoryMenus.add(repositoryMenu)

-  def getAccountSettingMenus: Seq[(Context) => Option[Link]] = accountSettingMenus.toSeq
+  def getRepositoryMenus: Seq[(RepositoryInfo, Context) => Option[Link]] = repositoryMenus.asScala.toSeq

-  def addDashboardTab(dashboardTab: (Context) => Option[Link]): Unit = dashboardTabs += dashboardTab
+  def addRepositorySettingTab(repositorySettingTab: (RepositoryInfo, Context) => Option[Link]): Unit = repositorySettingTabs.add(repositorySettingTab)

-  def getDashboardTabs: Seq[(Context) => Option[Link]] = dashboardTabs.toSeq
+  def getRepositorySettingTabs: Seq[(RepositoryInfo, Context) => Option[Link]] = repositorySettingTabs.asScala.toSeq

-  def addAssetsMapping(assetsMapping: (String, String, ClassLoader)): Unit = assetsMappings += assetsMapping
+  def addProfileTab(profileTab: (Account, Context) => Option[Link]): Unit = profileTabs.add(profileTab)

-  def getAssetsMappings: Seq[(String, String, ClassLoader)] = assetsMappings.toSeq
+  def getProfileTabs: Seq[(Account, Context) => Option[Link]] = profileTabs.asScala.toSeq

-  def addTextDecorator(textDecorator: TextDecorator): Unit = textDecorators += textDecorator
+  def addSystemSettingMenu(systemSettingMenu: (Context) => Option[Link]): Unit = systemSettingMenus.add(systemSettingMenu)

-  def getTextDecorators: Seq[TextDecorator] = textDecorators.toSeq
+  def getSystemSettingMenus: Seq[(Context) => Option[Link]] = systemSettingMenus.asScala.toSeq

-  def addSuggestionProvider(suggestionProvider: SuggestionProvider): Unit = suggestionProviders += suggestionProvider
+  def addAccountSettingMenu(accountSettingMenu: (Context) => Option[Link]): Unit = accountSettingMenus.add(accountSettingMenu)

-  def getSuggestionProviders: Seq[SuggestionProvider] = suggestionProviders.toSeq
+  def getAccountSettingMenus: Seq[(Context) => Option[Link]] = accountSettingMenus.asScala.toSeq
+
+  def addDashboardTab(dashboardTab: (Context) => Option[Link]): Unit = dashboardTabs.add(dashboardTab)
+
+  def getDashboardTabs: Seq[(Context) => Option[Link]] = dashboardTabs.asScala.toSeq
+
+  def addIssueSidebar(issueSidebar: (Issue, RepositoryInfo, Context) => Option[Html]): Unit = issueSidebars.add(issueSidebar)
+
+  def getIssueSidebars: Seq[(Issue, RepositoryInfo, Context) => Option[Html]] = issueSidebars.asScala.toSeq
+
+  def addAssetsMapping(assetsMapping: (String, String, ClassLoader)): Unit = assetsMappings.add(assetsMapping)
+
+  def getAssetsMappings: Seq[(String, String, ClassLoader)] = assetsMappings.asScala.toSeq
+
+  def addTextDecorator(textDecorator: TextDecorator): Unit = textDecorators.add(textDecorator)
+
+  def getTextDecorators: Seq[TextDecorator] = textDecorators.asScala.toSeq
+
+  def addSuggestionProvider(suggestionProvider: SuggestionProvider): Unit = suggestionProviders.add(suggestionProvider)
+
+  def getSuggestionProviders: Seq[SuggestionProvider] = suggestionProviders.asScala.toSeq
 }

 /**
@@ -155,79 +187,233 @@ object PluginRegistry {

  private val logger = LoggerFactory.getLogger(classOf[PluginRegistry])

-  private val instance = new PluginRegistry()
+  private var instance = new PluginRegistry()
+
+  private var watcher: PluginWatchThread = null
+  private var extraWatcher: PluginWatchThread = null
+  private val initializing = new AtomicBoolean(false)

  /**
   * Returns the PluginRegistry singleton instance.
   */
  def apply(): PluginRegistry = instance

+  /**
+   * Reload all plugins.
+   */
+  def reload(context: ServletContext, settings: SystemSettings, conn: java.sql.Connection): Unit = synchronized {
+    shutdown(context, settings)
+    instance = new PluginRegistry()
+    initialize(context, settings, conn)
+  }
+
+  /**
+   * Uninstall a specified plugin.
+   */
+  def uninstall(pluginId: String, context: ServletContext, settings: SystemSettings, conn: java.sql.Connection): Unit = synchronized {
+    instance.getPlugins()
+      .collect { case plugin if plugin.pluginId == pluginId => plugin }
+      .foreach { plugin =>
+//      try {
+//        plugin.pluginClass.uninstall(instance, context, settings)
+//      } catch {
+//        case e: Exception =>
+//          logger.error(s"Error during uninstalling plugin: ${plugin.pluginJar.getName}", e)
+//      }
+        shutdown(context, settings)
+        plugin.pluginJar.delete()
+        instance = new PluginRegistry()
+        initialize(context, settings, conn)
+      }
+  }
+
+  /**
+   * Install a plugin from a specified jar file.
+   */
+  def install(file: File, context: ServletContext, settings: SystemSettings, conn: java.sql.Connection): Unit = synchronized {
+    shutdown(context, settings)
+    FileUtils.copyFile(file, new File(PluginHome, file.getName))
+    instance = new PluginRegistry()
+    initialize(context, settings, conn)
+  }
+
+  private def listPluginJars(dir: File): Seq[File] = {
+    dir.listFiles(new FilenameFilter {
+      override def accept(dir: File, name: String): Boolean = name.endsWith(".jar")
+    }).toSeq.sortBy(_.getName).reverse
+  }
+
+  lazy val extraPluginDir: Option[String] = Option(System.getProperty("gitbucket.pluginDir"))
+
  /**
   * Initializes all installed plugins.
   */
-  def initialize(context: ServletContext, settings: SystemSettings, conn: java.sql.Connection): Unit = {
+  def initialize(context: ServletContext, settings: SystemSettings, conn: java.sql.Connection): Unit = synchronized {
    val pluginDir = new File(PluginHome)
    val manager = new JDBCVersionManager(conn)

-    if(pluginDir.exists && pluginDir.isDirectory){
-      pluginDir.listFiles(new FilenameFilter {
-        override def accept(dir: File, name: String): Boolean = name.endsWith(".jar")
-      }).foreach { pluginJar =>
-        val classLoader = new URLClassLoader(Array(pluginJar.toURI.toURL), Thread.currentThread.getContextClassLoader)
-        try {
-          val plugin = classLoader.loadClass("Plugin").getDeclaredConstructor().newInstance().asInstanceOf[Plugin]
+    // Clean installed directory
+    val installedDir = new File(PluginHome, ".installed")
+    if(installedDir.exists){
+      FileUtils.deleteDirectory(installedDir)
+    }
+    installedDir.mkdir()

-          // Migration
-          val solidbase = new Solidbase()
-          solidbase.migrate(conn, classLoader, DatabaseConfig.liquiDriver, new Module(plugin.pluginId, plugin.versions: _*))
+    val pluginJars = listPluginJars(pluginDir)
+    val extraJars = extraPluginDir.map { extraDir => listPluginJars(new File(extraDir)) }.getOrElse(Nil)

-          // Check version
-          val databaseVersion = manager.getCurrentVersion(plugin.pluginId)
-          val pluginVersion = plugin.versions.last.getVersion
-          if(databaseVersion != pluginVersion){
-            throw new IllegalStateException(s"Plugin version is ${pluginVersion}, but database version is ${databaseVersion}")
+    (extraJars ++ pluginJars).foreach { pluginJar =>
+      val installedJar = new File(installedDir, pluginJar.getName)
+      FileUtils.copyFile(pluginJar, installedJar)
+
+      logger.info(s"Initialize ${pluginJar.getName}")
+      val classLoader = new URLClassLoader(Array(installedJar.toURI.toURL), Thread.currentThread.getContextClassLoader)
+      try {
+        val plugin = classLoader.loadClass("Plugin").getDeclaredConstructor().newInstance().asInstanceOf[Plugin]
+        val pluginId = plugin.pluginId
+
+        // Check duplication
+        instance.getPlugins().find(_.pluginId == pluginId) match {
+          case Some(x) => {
+            logger.warn(s"Plugin ${pluginId} is duplicated. ${x.pluginJar.getName} is available.")
          }
+          case None => {
+            // Migration
+            val solidbase = new Solidbase()
+            solidbase.migrate(conn, classLoader, DatabaseConfig.liquiDriver, new Module(plugin.pluginId, plugin.versions: _*))

-          // Initialize
-          plugin.initialize(instance, context, settings)
-          instance.addPlugin(PluginInfo(
-            pluginId      = plugin.pluginId,
-            pluginName    = plugin.pluginName,
-            pluginVersion = plugin.versions.last.getVersion,
-            description   = plugin.description,
-            pluginClass   = plugin
-          ))
+            // Check database version
+            val databaseVersion = manager.getCurrentVersion(plugin.pluginId)
+            val pluginVersion = plugin.versions.last.getVersion
+            if (databaseVersion != pluginVersion) {
+              throw new IllegalStateException(s"Plugin version is ${pluginVersion}, but database version is ${databaseVersion}")
+            }

-        } catch {
-          case e: Throwable => {
-            logger.error(s"Error during plugin initialization: ${pluginJar.getAbsolutePath}", e)
+            // Initialize
+            plugin.initialize(instance, context, settings)
+            instance.addPlugin(PluginInfo(
+              pluginId      = plugin.pluginId,
+              pluginName    = plugin.pluginName,
+              pluginVersion = plugin.versions.last.getVersion,
+              description   = plugin.description,
+              pluginClass   = plugin,
+              pluginJar     = pluginJar,
+              classLoader   = classLoader
+            ))
          }
        }
+      } catch {
+        case e: Throwable => logger.error(s"Error during plugin initialization: ${pluginJar.getName}", e)
+      }
+    }
+
+    if(watcher == null){
+      watcher = new PluginWatchThread(context, PluginHome)
+      watcher.start()
+    }
+
+    extraPluginDir.foreach { extraDir =>
+      if(extraWatcher == null){
+        extraWatcher = new PluginWatchThread(context, extraDir)
+        extraWatcher.start()
      }
    }
  }

-  def shutdown(context: ServletContext, settings: SystemSettings): Unit = {
-    instance.getPlugins().foreach { pluginInfo =>
+  def shutdown(context: ServletContext, settings: SystemSettings): Unit = synchronized {
+    instance.getPlugins().foreach { plugin =>
      try {
-        pluginInfo.pluginClass.shutdown(instance, context, settings)
+        plugin.pluginClass.shutdown(instance, context, settings)
+        if(watcher != null){
+          watcher.interrupt()
+          watcher = null
+        }
+        if(extraWatcher != null){
+          extraWatcher.interrupt()
+          extraWatcher = null
+        }
      } catch {
        case e: Exception => {
-          logger.error(s"Error during plugin shutdown", e)
+          logger.error(s"Error during plugin shutdown: ${plugin.pluginJar.getName}", e)
        }
+      } finally {
+        plugin.classLoader.close()
      }
    }
  }

-
 }

-case class Link(id: String, label: String, path: String, icon: Option[String] = None)
+case class Link(
+  id: String,
+  label: String,
+  path: String,
+  icon: Option[String] = None
+)
+
+class PluginInfoBase(
+  val pluginId: String,
+  val pluginName: String,
+  val pluginVersion: String,
+  val description: String
+)

 case class PluginInfo(
-  pluginId: String,
-  pluginName: String,
-  pluginVersion: String,
-  description: String,
-  pluginClass: Plugin
-)
+  override val pluginId: String,
+  override val pluginName: String,
+  override val pluginVersion: String,
+  override val description: String,
+  pluginClass: Plugin,
+  pluginJar: File,
+  classLoader: URLClassLoader
+) extends PluginInfoBase(pluginId, pluginName, pluginVersion, description)
+
+class PluginWatchThread(context: ServletContext, dir: String) extends Thread with SystemSettingsService {
+  import gitbucket.core.model.Profile.profile.blockingApi._
+  import scala.collection.JavaConverters._
+
+  private val logger = LoggerFactory.getLogger(classOf[PluginWatchThread])
+
+  override def run(): Unit = {
+    val path = Paths.get(dir)
+    if(!Files.exists(path)){
+      Files.createDirectories(path)
+    }
+    val fs = path.getFileSystem
+    val watcher = fs.newWatchService
+
+    val watchKey = path.register(watcher,
+      StandardWatchEventKinds.ENTRY_CREATE,
+      StandardWatchEventKinds.ENTRY_MODIFY,
+      StandardWatchEventKinds.ENTRY_DELETE,
+      StandardWatchEventKinds.OVERFLOW)
+
+    logger.info("Start PluginWatchThread: " + path)
+
+    try {
+      while (watchKey.isValid()) {
+        val detectedWatchKey = watcher.take()
+        val events = detectedWatchKey.pollEvents.asScala.filter { e =>
+          e.context.toString != ".installed" && !e.context.toString.endsWith(".bak")
+        }
+        if(events.nonEmpty){
+          events.foreach { event =>
+            logger.info(event.kind + ": " + event.context)
+          }
+
+          gitbucket.core.servlet.Database() withTransaction { session =>
+            logger.info("Reloading plugins...")
+            PluginRegistry.reload(context, loadSystemSettings(), session.conn)
+            logger.info("Reloading finished.")
+          }
+        }
+        detectedWatchKey.reset()
+      }
+    } catch {
+      case _: InterruptedException => watchKey.cancel()
+    }
+
+    logger.info("Shutdown PluginWatchThread")
+  }
+
+}
--- a/src/main/scala/gitbucket/core/plugin/PluginRepository.scala
+++ b/src/main/scala/gitbucket/core/plugin/PluginRepository.scala
@@ -0,0 +1,41 @@
+package gitbucket.core.plugin
+
+import org.json4s._
+import gitbucket.core.util.Directory._
+import org.apache.commons.io.FileUtils
+
+object PluginRepository {
+  implicit val formats = DefaultFormats
+
+  def parsePluginJson(json: String): Seq[PluginMetadata] = {
+    org.json4s.jackson.JsonMethods.parse(json).extract[Seq[PluginMetadata]]
+  }
+
+  lazy val LocalRepositoryDir = new java.io.File(PluginHome, ".repository")
+  lazy val LocalRepositoryIndexFile = new java.io.File(LocalRepositoryDir, "plugins.json")
+
+  def getPlugins(): Seq[PluginMetadata] = {
+    if(LocalRepositoryIndexFile.exists){
+      parsePluginJson(FileUtils.readFileToString(LocalRepositoryIndexFile, "UTF-8"))
+    } else Nil
+  }
+
+}
+
+// Mapped from plugins.json
+case class PluginMetadata(
+  id: String,
+  name: String,
+  description: String,
+  versions: Seq[VersionDef],
+  default: Boolean = false
+){
+  lazy val latestVersion: VersionDef = versions.last
+}
+
+case class VersionDef(
+  version: String,
+  file: String,
+  range: String
+)
+
--- a/src/main/scala/gitbucket/core/service/ActivityService.scala
+++ b/src/main/scala/gitbucket/core/service/ActivityService.scala
@@ -59,7 +59,7 @@ trait ActivityService {
    Activities insert Activity(userName, repositoryName, activityUserName,
      "open_issue",
      s"[user:${activityUserName}] opened issue [issue:${userName}/${repositoryName}#${issueId}]",
-      Some(title), 
+      Some(title),
      currentDate)

  def recordCloseIssueActivity(userName: String, repositoryName: String, activityUserName: String, issueId: Int, title: String)
@@ -132,10 +132,10 @@ trait ActivityService {
    Activities insert Activity(userName, repositoryName, activityUserName,
      "push",
      s"[user:${activityUserName}] pushed to [branch:${userName}/${repositoryName}#${branchName}] at [repo:${userName}/${repositoryName}]",
-      Some(commits.map { commit => commit.id + ":" + commit.shortMessage }.mkString("\n")),
+      Some(commits.take(5).map { commit => commit.id + ":" + commit.shortMessage }.mkString("\n")),
      currentDate)

-  def recordCreateTagActivity(userName: String, repositoryName: String, activityUserName: String, 
+  def recordCreateTagActivity(userName: String, repositoryName: String, activityUserName: String,
      tagName: String, commits: List[JGitUtil.CommitInfo])(implicit s: Session): Unit =
    Activities insert Activity(userName, repositoryName, activityUserName,
      "create_tag",
@@ -167,7 +167,7 @@ trait ActivityService {
      None,
      currentDate)

-  def recordForkActivity(userName: String, repositoryName: String, activityUserName: String, forkedUserName: String)(implicit s: Session): Unit = 
+  def recordForkActivity(userName: String, repositoryName: String, activityUserName: String, forkedUserName: String)(implicit s: Session): Unit =
    Activities insert Activity(userName, repositoryName, activityUserName,
      "fork",
      s"[user:${activityUserName}] forked [repo:${userName}/${repositoryName}] to [repo:${forkedUserName}/${repositoryName}]",
--- a/src/main/scala/gitbucket/core/service/HandleCommentService.scala
+++ b/src/main/scala/gitbucket/core/service/HandleCommentService.scala
@@ -2,11 +2,10 @@ package gitbucket.core.service

 import gitbucket.core.controller.Context
 import gitbucket.core.model.Issue
-import gitbucket.core.model.Profile._
 import gitbucket.core.model.Profile.profile.blockingApi._
+import gitbucket.core.plugin.PluginRegistry
 import gitbucket.core.util.SyntaxSugars._
 import gitbucket.core.util.Implicits._
-import gitbucket.core.util.Notifier

 trait HandleCommentService {
  self: RepositoryService with IssuesService with ActivityService
@@ -21,7 +20,7 @@ trait HandleCommentService {
      defining(repository.owner, repository.name){ case (owner, name) =>
        val userName = loginAccount.userName

-        val (action, recordActivity) = actionOpt
+        val (action, actionActivity) = actionOpt
          .collect {
            case "close" if(!issue.closed) => true  ->
              (Some("close")  -> Some(if(issue.isPullRequest) recordClosePullRequestActivity _ else recordCloseIssueActivity _))
@@ -36,54 +35,55 @@ trait HandleCommentService {

        val commentId = (content, action) match {
          case (None, None) => None
-          case (None, Some(action)) => Some(createComment(owner, name, userName, issue.issueId, action.capitalize, action))
-          case (Some(content), _) => Some(createComment(owner, name, userName, issue.issueId, content, action.map(_+ "_comment").getOrElse("comment")))
+          case (None, Some(action)) =>
+            Some(createComment(owner, name, userName, issue.issueId, action.capitalize, action))
+          case (Some(content), _) =>
+            val id = Some(createComment(owner, name, userName, issue.issueId, content, action.map(_+ "_comment").getOrElse("comment")))
+
+            // record comment activity
+            if(issue.isPullRequest) recordCommentPullRequestActivity(owner, name, userName, issue.issueId, content)
+            else recordCommentIssueActivity(owner, name, userName, issue.issueId, content)
+
+            // extract references and create refer comment
+            createReferComment(owner, name, issue, content, loginAccount)
+
+            id
        }

-        // record comment activity if comment is entered
-        content foreach {
-          (if(issue.isPullRequest) recordCommentPullRequestActivity _ else recordCommentIssueActivity _)
-          (owner, name, userName, issue.issueId, _)
-        }
-        recordActivity foreach ( _ (owner, name, userName, issue.issueId, issue.title) )
-
-        // extract references and create refer comment
-        content.map { content =>
-          createReferComment(owner, name, issue, content, loginAccount)
-        }
+        actionActivity.foreach { f => f(owner, name, userName, issue.issueId, issue.title) }

        // call web hooks
        action match {
-          case None => commentId.map { commentIdSome => callIssueCommentWebHook(repository, issue, commentIdSome, loginAccount) }
-          case Some(act) => {
+          case None => commentId foreach (callIssueCommentWebHook(repository, issue, _, loginAccount))
+          case Some(act) =>
            val webHookAction = act match {
-              case "open"   => "opened"
-              case "reopen" => "reopened"
              case "close"  => "closed"
-              case _ => act
+              case "reopen" => "reopened"
            }
-            if (issue.isPullRequest) {
+            if(issue.isPullRequest)
              callPullRequestWebHook(webHookAction, repository, issue.issueId, context.baseUrl, loginAccount)
-            } else {
+            else
              callIssuesWebHook(webHookAction, repository, issue, context.baseUrl, loginAccount)
-            }
-          }
        }

-        // notifications
-        Notifier() match {
-          case f =>
-            content foreach {
-              f.toNotify(repository, issue, _){
-                Notifier.msgComment(s"${context.baseUrl}/${owner}/${name}/${
-                  if(issue.isPullRequest) "pull" else "issues"}/${issue.issueId}#comment-${commentId.get}")
-              }
-            }
-            action foreach {
-              f.toNotify(repository, issue, _){
-                Notifier.msgStatus(s"${context.baseUrl}/${owner}/${name}/issues/${issue.issueId}")
-              }
-            }
+        // call hooks
+        content foreach { x =>
+          if(issue.isPullRequest)
+            PluginRegistry().getPullRequestHooks.foreach(_.addedComment(commentId.get, x, issue, repository))
+          else
+            PluginRegistry().getIssueHooks.foreach(_.addedComment(commentId.get, x, issue, repository))
+        }
+        action foreach {
+          case "close" =>
+            if(issue.isPullRequest)
+              PluginRegistry().getPullRequestHooks.foreach(_.closed(issue, repository))
+            else
+              PluginRegistry().getIssueHooks.foreach(_.closed(issue, repository))
+          case "reopen" =>
+            if(issue.isPullRequest)
+              PluginRegistry().getPullRequestHooks.foreach(_.reopened(issue, repository))
+            else
+              PluginRegistry().getIssueHooks.foreach(_.reopened(issue, repository))
        }

        commentId.map( issue -> _ )
--- a/src/main/scala/gitbucket/core/service/IssueCreationService.scala
+++ b/src/main/scala/gitbucket/core/service/IssueCreationService.scala
@@ -3,17 +3,16 @@ package gitbucket.core.service
 import gitbucket.core.controller.Context
 import gitbucket.core.model.{Account, Issue}
 import gitbucket.core.model.Profile.profile.blockingApi._
+import gitbucket.core.plugin.PluginRegistry
 import gitbucket.core.service.RepositoryService.RepositoryInfo
-import gitbucket.core.util.Notifier
 import gitbucket.core.util.Implicits._

-// TODO: Merged with IssuesService?
 trait IssueCreationService {

  self: RepositoryService with WebHookIssueCommentService with LabelsService with IssuesService with ActivityService =>

  def createIssue(repository: RepositoryInfo, title:String, body:Option[String],
-                  assignee: Option[String], milestoneId: Option[Int], labelNames: Seq[String],
+                  assignee: Option[String], milestoneId: Option[Int], priorityId: Option[Int], labelNames: Seq[String],
                  loginAccount: Account)(implicit context: Context, s: Session) : Issue = {

    val owner = repository.owner
@@ -24,7 +23,8 @@ trait IssueCreationService {
    // insert issue
    val issueId = insertIssue(owner, name, userName, title, body,
      if (manageable) assignee else None,
-      if (manageable) milestoneId else None)
+      if (manageable) milestoneId else None,
+      if (manageable) priorityId else None)
    val issue: Issue = getIssue(owner, name, issueId.toString).get

    // insert labels
@@ -46,10 +46,9 @@ trait IssueCreationService {
    // call web hooks
    callIssuesWebHook("opened", repository, issue, context.baseUrl, loginAccount)

-    // notifications
-    Notifier().toNotify(repository, issue, body.getOrElse("")) {
-      Notifier.msgIssue(s"${context.baseUrl}/${owner}/${name}/issues/${issueId}")
-    }
+    // call hooks
+    PluginRegistry().getIssueHooks.foreach(_.created(issue, repository))
+
    issue
  }

--- a/src/main/scala/gitbucket/core/service/IssuesService.scala
+++ b/src/main/scala/gitbucket/core/service/IssuesService.scala
@@ -32,8 +32,11 @@ trait IssuesService {
    .list

  def getMergedComment(owner: String, repository: String, issueId: Int)(implicit s: Session): Option[(IssueComment, Account)] = {
-    getCommentsForApi(owner, repository, issueId)
-      .collectFirst { case (comment, account, _) if comment.action == "merged" => (comment, account) }
+    IssueComments.filter(_.byIssue(owner, repository, issueId))
+      .filter(_.action === "merge".bind)
+      .join(Accounts).on { case  t1 ~ t2 => t1.commentedUserName === t2.userName }
+      .map { case t1 ~ t2 => (t1, t2)}
+      .firstOption
  }

  def getComment(owner: String, repository: String, commentId: String)(implicit s: Session): Option[IssueComment] = {
@@ -97,6 +100,30 @@ trait IssuesService {
      .list.toMap
  }

+  /**
+    * Returns the Map which contains issue count for each priority.
+    *
+    * @param owner the repository owner
+    * @param repository the repository name
+    * @param condition the search condition
+    * @return the Map which contains issue count for each priority (key is priority name, value is issue count)
+    */
+  def countIssueGroupByPriorities(owner: String, repository: String, condition: IssueSearchCondition,
+                              filterUser: Map[String, String])(implicit s: Session): Map[String, Int] = {
+
+    searchIssueQuery(Seq(owner -> repository), condition.copy(labels = Set.empty), false)
+      .join(Priorities).on { case t1 ~ t2 =>
+        t1.byPriority(t2.userName, t2.repositoryName, t2.priorityId)
+      }
+      .groupBy { case t1 ~ t2 =>
+        t2.priorityName
+      }
+      .map { case priorityName ~ t =>
+        priorityName -> t.length
+      }
+      .list.toMap
+  }
+
  def getCommitStatues(userName: String, repositoryName: String, issueId: Int)(implicit s: Session): Option[CommitStatusInfo] = {
    val status = PullRequests
      .filter { pr =>
@@ -136,21 +163,23 @@ trait IssuesService {
                 (implicit s: Session): List[IssueInfo] = {
    // get issues and comment count and labels
    val result = searchIssueQueryBase(condition, pullRequest, offset, limit, repos)
-        .joinLeft (IssueLabels) .on { case t1 ~ t2 ~ i ~ t3           => t1.byIssue(t3.userName, t3.repositoryName, t3.issueId) }
-        .joinLeft (Labels)      .on { case t1 ~ t2 ~ i ~ t3 ~ t4      => t3.map(_.byLabel(t4.userName, t4.repositoryName, t4.labelId)) }
-        .joinLeft (Milestones)  .on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 => t1.byMilestone(t5.userName, t5.repositoryName, t5.milestoneId) }
-        .sortBy { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 => i asc }
-        .map { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 =>
-          (t1, t2.commentCount, t4.map(_.labelId), t4.map(_.labelName), t4.map(_.color), t5.map(_.title))
+        .joinLeft (IssueLabels) .on { case t1 ~ t2 ~ i ~ t3                => t1.byIssue(t3.userName, t3.repositoryName, t3.issueId) }
+        .joinLeft (Labels)      .on { case t1 ~ t2 ~ i ~ t3 ~ t4           => t3.map(_.byLabel(t4.userName, t4.repositoryName, t4.labelId)) }
+        .joinLeft (Milestones)  .on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5      => t1.byMilestone(t5.userName, t5.repositoryName, t5.milestoneId) }
+        .joinLeft (Priorities)  .on { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 => t1.byPriority(t6.userName, t6.repositoryName, t6.priorityId) }
+        .sortBy { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 => i asc }
+        .map { case t1 ~ t2 ~ i ~ t3 ~ t4 ~ t5 ~ t6 =>
+          (t1, t2.commentCount, t4.map(_.labelId), t4.map(_.labelName), t4.map(_.color), t5.map(_.title), t6.map(_.priorityName))
        }
        .list
        .splitWith { (c1, c2) => c1._1.userName == c2._1.userName && c1._1.repositoryName == c2._1.repositoryName && c1._1.issueId == c2._1.issueId }

    result.map { issues => issues.head match {
-      case (issue, commentCount, _, _, _, milestone) =>
+      case (issue, commentCount, _, _, _, milestone, priority) =>
        IssueInfo(issue,
         issues.flatMap { t => t._3.map (Label(issue.userName, issue.repositoryName, _, t._4.get, t._5.get))} toList,
         milestone,
+         priority,
         commentCount,
         getCommitStatues(issue.userName, issue.repositoryName, issue.issueId))
    }} toList
@@ -204,6 +233,10 @@ trait IssuesService {
            case "asc"  => t1.updatedDate asc
            case "desc" => t1.updatedDate desc
          }
+          case "priority" => condition.direction match {
+            case "asc"  => t2.priority asc
+            case "desc" => t2.priority desc
+          }
        }
      }
      .drop(offset).take(limit).zipWithIndex
@@ -219,6 +252,7 @@ trait IssuesService {
        .foldLeft[Rep[Boolean]](false) ( _ || _ ) &&
      (t1.closed           === (condition.state == "closed").bind) &&
      (t1.milestoneId.?      isEmpty, condition.milestone == Some(None)) &&
+      (t1.priorityId.?       isEmpty, condition.priority == Some(None)) &&
      (t1.assignedUserName.? isEmpty, condition.assigned  == Some(None)) &&
      (t1.openedUserName   === condition.author.get.bind, condition.author.isDefined) &&
      (t1.pullRequest      === pullRequest.bind) &&
@@ -227,6 +261,11 @@ trait IssuesService {
        (t2.byPrimaryKey(t1.userName, t1.repositoryName, t1.milestoneId)) &&
        (t2.title === condition.milestone.get.get.bind)
      } exists, condition.milestone.flatten.isDefined) &&
+      // Priority filter
+      (Priorities filter { t2 =>
+        (t2.byPrimaryKey(t1.userName, t1.repositoryName, t1.priorityId)) &&
+          (t2.priorityName === condition.priority.get.get.bind)
+      } exists, condition.priority.flatten.isDefined) &&
      // Assignee filter
      (t1.assignedUserName === condition.assigned.get.get.bind, condition.assigned.flatten.isDefined) &&
      // Label filter
@@ -253,7 +292,7 @@ trait IssuesService {
    }

  def insertIssue(owner: String, repository: String, loginUser: String, title: String, content: Option[String],
-                  assignedUserName: Option[String], milestoneId: Option[Int],
+                  assignedUserName: Option[String], milestoneId: Option[Int], priorityId: Option[Int],
                  isPullRequest: Boolean = false)(implicit s: Session): Int = {
    // next id number
    sql"SELECT ISSUE_ID + 1 FROM ISSUE_ID WHERE USER_NAME = $owner AND REPOSITORY_NAME = $repository FOR UPDATE".as[Int]
@@ -264,6 +303,7 @@ trait IssuesService {
        id,
        loginUser,
        milestoneId,
+        priorityId,
        assignedUserName,
        title,
        content,
@@ -290,6 +330,7 @@ trait IssuesService {

  def createComment(owner: String, repository: String, loginUser: String,
      issueId: Int, content: String, action: String)(implicit s: Session): Int = {
+    Issues.filter(_.issueId === issueId.bind).map(_.updatedDate).update(currentDate)
    IssueComments returning IssueComments.map(_.commentId) insert IssueComment(
      userName          = owner,
      repositoryName    = repository,
@@ -305,27 +346,33 @@ trait IssuesService {
    Issues
      .filter (_.byPrimaryKey(owner, repository, issueId))
      .map { t => (t.title, t.content.?, t.updatedDate) }
-      .update (title, content, currentDate)
+      .update(title, content, currentDate)
  }

  def updateAssignedUserName(owner: String, repository: String, issueId: Int, assignedUserName: Option[String])(implicit s: Session): Int = {
-    Issues.filter (_.byPrimaryKey(owner, repository, issueId)).map(_.assignedUserName?).update (assignedUserName)
+    Issues.filter(_.byPrimaryKey(owner, repository, issueId)).map(t => (t.assignedUserName?, t.updatedDate)).update(assignedUserName, currentDate)
  }

  def updateMilestoneId(owner: String, repository: String, issueId: Int, milestoneId: Option[Int])(implicit s: Session): Int = {
-    Issues.filter (_.byPrimaryKey(owner, repository, issueId)).map(_.milestoneId?).update (milestoneId)
+    Issues.filter(_.byPrimaryKey(owner, repository, issueId)).map(t => (t.milestoneId?, t.updatedDate)).update(milestoneId, currentDate)
  }

-  def updateComment(commentId: Int, content: String)(implicit s: Session): Int = {
-    IssueComments.filter (_.byPrimaryKey(commentId)).map(t => (t.content, t.updatedDate)).update(content, currentDate)
+  def updatePriorityId(owner: String, repository: String, issueId: Int, priorityId: Option[Int])(implicit s: Session): Int = {
+    Issues.filter(_.byPrimaryKey(owner, repository, issueId)).map(t => (t.priorityId?, t.updatedDate)).update(priorityId, currentDate)
  }

-  def deleteComment(commentId: Int)(implicit s: Session): Int = {
-    IssueComments filter (_.byPrimaryKey(commentId)) delete
+  def updateComment(issueId: Int, commentId: Int, content: String)(implicit s: Session): Int = {
+    Issues.filter(_.issueId === issueId.bind).map(_.updatedDate).update(currentDate)
+    IssueComments.filter(_.byPrimaryKey(commentId)).map(t => (t.content, t.updatedDate)).update(content, currentDate)
+  }
+
+  def deleteComment(issueId: Int, commentId: Int)(implicit s: Session): Int = {
+    Issues.filter(_.issueId === issueId.bind).map(_.updatedDate).update(currentDate)
+    IssueComments.filter(_.byPrimaryKey(commentId)).delete
  }

  def updateClosed(owner: String, repository: String, issueId: Int, closed: Boolean)(implicit s: Session): Int = {
-    (Issues filter (_.byPrimaryKey(owner, repository, issueId)) map(t => (t.closed, t.updatedDate))).update((closed, currentDate))
+    Issues.filter(_.byPrimaryKey(owner, repository, issueId)).map(t => (t.closed, t.updatedDate)).update(closed, currentDate)
  }

  /**
@@ -430,6 +477,7 @@ object IssuesService {
  case class IssueSearchCondition(
      labels: Set[String] = Set.empty,
      milestone: Option[Option[String]] = None,
+      priority: Option[Option[String]] = None,
      author: Option[String] = None,
      assigned: Option[Option[String]] = None,
      mentioned: Option[String] = None,
@@ -455,10 +503,14 @@ object IssuesService {
      ).flatten ++
      labels.map(label => s"label:${label}") ++
      List(
-        milestone.map { _ match {
+        milestone.map {
          case Some(x) => s"milestone:${x}"
          case None    => "no:milestone"
-        }},
+        },
+        priority.map {
+          case Some(x) => s"priority:${x}"
+          case None    => "no:priority"
+        },
        (sort, direction) match {
          case ("created" , "desc") => None
          case ("created" , "asc" ) => Some("sort:created-asc")
@@ -466,6 +518,8 @@ object IssuesService {
          case ("comments", "asc" ) => Some("sort:comments-asc")
          case ("updated" , "desc") => Some("sort:updated-desc")
          case ("updated" , "asc" ) => Some("sort:updated-asc")
+          case ("priority", "desc") => Some("sort:priority-desc")
+          case ("priority", "asc" ) => Some("sort:priority-asc")
          case x                    => throw new MatchError(x)
        },
        visibility.map(visibility => s"visibility:${visibility}")
@@ -480,6 +534,10 @@ object IssuesService {
          case Some(x) => "milestone=" + urlEncode(x)
          case None    => "milestone=none"
        },
+        priority.map {
+          case Some(x) => "priority=" + urlEncode(x)
+          case None    => "priority=none"
+        },
        author   .map(x => "author="    + urlEncode(x)),
        assigned.map {
          case Some(x) => "assigned="  + urlEncode(x)
@@ -512,6 +570,10 @@ object IssuesService {
          case "none" => None
          case x      => Some(x)
        },
+        param(request, "priority").map {
+          case "none" => None
+          case x      => Some(x)
+        },
        param(request, "author"),
        param(request, "assigned").map {
          case "none" => None
@@ -519,7 +581,7 @@ object IssuesService {
        },
        param(request, "mentioned"),
        param(request, "state",     Seq("open", "closed")).getOrElse("open"),
-        param(request, "sort",      Seq("created", "comments", "updated")).getOrElse("created"),
+        param(request, "sort",      Seq("created", "comments", "updated", "priority")).getOrElse("created"),
        param(request, "direction", Seq("asc", "desc")).getOrElse("desc"),
        param(request, "visibility"),
        param(request, "groups").map(_.split(",").toSet).getOrElse(Set.empty)
@@ -535,6 +597,6 @@ object IssuesService {

  case class CommitStatusInfo(count: Int, successCount: Int, context: Option[String], state: Option[CommitState], targetUrl: Option[String], description: Option[String])

-  case class IssueInfo(issue: Issue, labels: List[Label], milestone: Option[String], commentCount: Int, status:Option[CommitStatusInfo])
+  case class IssueInfo(issue: Issue, labels: List[Label], milestone: Option[String], priority: Option[String], commentCount: Int, status:Option[CommitStatusInfo])

 }
--- a/src/main/scala/gitbucket/core/service/MergeService.scala
+++ b/src/main/scala/gitbucket/core/service/MergeService.scala
@@ -163,7 +163,7 @@ object MergeService{
        case e: NoMergeBaseException => true
      }
      val mergeTipCommit = using(new RevWalk( repository ))(_.parseCommit( mergeTip ))
-      val committer = mergeTipCommit.getCommitterIdent;
+      val committer = mergeTipCommit.getCommitterIdent
      def updateBranch(treeId:ObjectId, message:String, branchName:String){
        // creates merge commit
        val mergeCommitId = createMergeCommit(treeId, committer, message)
--- a/src/main/scala/gitbucket/core/service/PrioritiesService.scala
+++ b/src/main/scala/gitbucket/core/service/PrioritiesService.scala
@@ -0,0 +1,84 @@
+package gitbucket.core.service
+
+import gitbucket.core.model.Priority
+import gitbucket.core.model.Profile._
+import gitbucket.core.model.Profile.profile.blockingApi._
+import gitbucket.core.util.StringUtil
+
+trait PrioritiesService {
+
+  def getPriorities(owner: String, repository: String)(implicit s: Session): List[Priority] =
+    Priorities.filter(_.byRepository(owner, repository)).sortBy(_.ordering asc).list
+
+  def getPriority(owner: String, repository: String, priorityId: Int)(implicit s: Session): Option[Priority] =
+    Priorities.filter(_.byPrimaryKey(owner, repository, priorityId)).firstOption
+
+  def getPriority(owner: String, repository: String, priorityName: String)(implicit s: Session): Option[Priority] =
+    Priorities.filter(_.byPriority(owner, repository, priorityName)).firstOption
+
+  def createPriority(owner: String, repository: String, priorityName: String, description: Option[String], color: String)(implicit s: Session): Int = {
+    val ordering = Priorities.filter(_.byRepository(owner, repository))
+      .list
+      .map(p => p.ordering)
+      .reduceOption(_ max _)
+      .map(m => m + 1)
+      .getOrElse(0)
+
+    Priorities returning Priorities.map(_.priorityId) insert Priority(
+      userName       = owner,
+      repositoryName = repository,
+      priorityName   = priorityName,
+      description    = description,
+      isDefault      = false,
+      ordering       = ordering,
+      color          = color
+    )
+  }
+
+  def updatePriority(owner: String, repository: String, priorityId: Int, priorityName: String, description: Option[String], color: String)
+                 (implicit s: Session): Unit =
+    Priorities.filter(_.byPrimaryKey(owner, repository, priorityId))
+          .map(t => (t.priorityName, t.description.?, t.color))
+          .update(priorityName, description, color)
+
+  def reorderPriorities(owner: String, repository: String, order: Map[Int, Int])
+                    (implicit s: Session): Unit = {
+
+    Priorities.filter(_.byRepository(owner, repository))
+      .list
+      .foreach(p => Priorities
+        .filter(_.byPrimaryKey(owner, repository, p.priorityId))
+        .map(_.ordering)
+        .update(order.get(p.priorityId).get))
+  }
+
+  def deletePriority(owner: String, repository: String, priorityId: Int)(implicit s: Session): Unit = {
+    Issues.filter(_.byRepository(owner, repository))
+      .filter(_.priorityId === priorityId)
+      .map(_.priorityId?)
+      .update(None)
+
+    Priorities.filter(_.byPrimaryKey(owner, repository, priorityId)).delete
+  }
+
+  def getDefaultPriority(owner: String, repository: String)(implicit s: Session): Option[Priority] = {
+    Priorities
+      .filter(_.byRepository(owner, repository))
+      .filter(_.isDefault)
+      .list
+      .headOption
+  }
+
+  def setDefaultPriority(owner: String, repository: String, priorityId: Option[Int])(implicit s: Session): Unit = {
+    Priorities
+      .filter(_.byRepository(owner, repository))
+      .filter(_.isDefault)
+      .map(_.isDefault)
+      .update(false)
+
+    priorityId.foreach(id => Priorities
+      .filter(_.byPrimaryKey(owner, repository, id))
+      .map(_.isDefault)
+      .update(true))
+  }
+}
--- a/src/main/scala/gitbucket/core/service/ProtectedBranchService.scala
+++ b/src/main/scala/gitbucket/core/service/ProtectedBranchService.scala
@@ -18,10 +18,11 @@ trait ProtectedBranchService {
      .filter(_._1.byPrimaryKey(owner, repository, branch))
      .list
      .groupBy(_._1)
+      .headOption
      .map { p => p._1 -> p._2.flatMap(_._2) }
      .map { case (t1, contexts) =>
        new ProtectedBranchInfo(t1.userName, t1.repositoryName, true, contexts, t1.statusCheckAdmin)
-      }.headOption
+      }

  def getProtectedBranchInfo(owner: String, repository: String, branch: String)(implicit session: Session): ProtectedBranchInfo =
    getProtectedBranchInfoOpt(owner, repository, branch).getOrElse(ProtectedBranchInfo.disabled(owner, repository))
--- a/src/main/scala/gitbucket/core/service/PullRequestService.scala
+++ b/src/main/scala/gitbucket/core/service/PullRequestService.scala
@@ -94,9 +94,9 @@ trait PullRequestService { self: IssuesService with CommitsService =>

  /**
   * for repository viewer.
-   * 1. find pull request from from `branch` to othre branch on same repository
+   * 1. find pull request from `branch` to other branch on same repository
   *   1. return if exists pull request to `defaultBranch`
-   *   2. return if exists pull request to othre branch
+   *   2. return if exists pull request to other branch
   * 2. return None
   */
  def getPullRequestFromBranch(userName: String, repositoryName: String, branch: String, defaultBranch: String)
@@ -256,7 +256,7 @@ object PullRequestService {
    val statuses: List[CommitStatus] =
      commitStatues ++ (branchProtection.contexts.toSet -- commitStatues.map(_.context).toSet).map(CommitStatus.pending(branchProtection.owner, branchProtection.repository, _))
    val hasRequiredStatusProblem = needStatusCheck && branchProtection.contexts.exists(context => statuses.find(_.context == context).map(_.state) != Some(CommitState.SUCCESS))
-    val hasProblem = hasRequiredStatusProblem || hasConflict || (!statuses.isEmpty && CommitState.combine(statuses.map(_.state).toSet) != CommitState.SUCCESS)
+    val hasProblem = hasRequiredStatusProblem || hasConflict || (statuses.nonEmpty && CommitState.combine(statuses.map(_.state).toSet) != CommitState.SUCCESS)
    val canUpdate = branchIsOutOfDate && !hasConflict
    val canMerge = hasMergePermission && !hasConflict && !hasRequiredStatusProblem
    lazy val commitStateSummary:(CommitState, String) = {
--- a/src/main/scala/gitbucket/core/service/RepositoryCreationService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositoryCreationService.scala
@@ -10,7 +10,7 @@ import org.eclipse.jgit.dircache.DirCache
 import org.eclipse.jgit.lib.{FileMode, Constants}

 trait RepositoryCreationService {
-  self: AccountService with RepositoryService with LabelsService with WikiService with ActivityService =>
+  self: AccountService with RepositoryService with LabelsService with WikiService with ActivityService with PrioritiesService =>

  def createRepository(loginAccount: Account, owner: String, name: String, description: Option[String], isPrivate: Boolean, createReadme: Boolean)
                      (implicit s: Session) {
@@ -30,6 +30,9 @@ trait RepositoryCreationService {
    // Insert default labels
    insertDefaultLabels(owner, name)

+    // Insert default priorities
+    insertDefaultPriorities(owner, name)
+
    // Create the actual repository
    val gitdir = getRepositoryDir(owner, name)
    JGitUtil.initRepository(gitdir)
@@ -74,5 +77,13 @@ trait RepositoryCreationService {
    createLabel(userName, repositoryName, "wontfix", "ffffff")
  }

+  def insertDefaultPriorities(userName: String, repositoryName: String)(implicit s: Session): Unit = {
+    createPriority(userName, repositoryName, "highest", Some("All defects at this priority must be fixed before any public product is delivered."), "fc2929")
+    createPriority(userName, repositoryName, "very high", Some("Issues must be addressed before a final product is delivered."), "fc5629")
+    createPriority(userName, repositoryName, "high", Some("Issues should be addressed before a final product is delivered. If the issue cannot be resolved before delivery, it should be prioritized for the next release."), "fc9629")
+    createPriority(userName, repositoryName, "important", Some("Issues can be shipped with a final product, but should be reviewed before the next release."), "fccd29")
+    createPriority(userName, repositoryName, "default", Some("Default."), "acacac")

+    setDefaultPriority(userName, repositoryName, getPriority(userName, repositoryName, "default").map(_.priorityId))
+  }
 }
--- a/src/main/scala/gitbucket/core/service/RepositorySearchService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositorySearchService.scala
@@ -67,7 +67,7 @@ trait RepositorySearchService { self: IssuesService =>
        files.map { case (path, text) =>
          val (highlightText, lineNumber) = getHighlightText(text, query)
          FileSearchResult(
-            path.replaceFirst("\\.md$", ""),
+            path.stripSuffix(".md"),
            commits(path).getCommitterIdent.getWhen,
            highlightText,
            lineNumber)
--- a/src/main/scala/gitbucket/core/service/RepositoryService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositoryService.scala
@@ -59,13 +59,14 @@ trait RepositoryService { self: AccountService =>
      (Repositories filter { t => t.byRepository(oldUserName, oldRepositoryName) } firstOption).map { repository =>
        Repositories insert repository.copy(userName = newUserName, repositoryName = newRepositoryName)

-        val webHooks                = WebHooks               .filter(_.byRepository(oldUserName, oldRepositoryName)).list
-        val webHookEvents           = WebHookEvents          .filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val webHooks                = RepositoryWebHooks     .filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val webHookEvents           = RepositoryWebHookEvents.filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val milestones              = Milestones             .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val issueId                 = IssueId                .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val issues                  = Issues                 .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val pullRequests            = PullRequests           .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val labels                  = Labels                 .filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val priorities              = Priorities             .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val issueComments           = IssueComments          .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val issueLabels             = IssueLabels            .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val commitComments          = CommitComments         .filter(_.byRepository(oldUserName, oldRepositoryName)).list
@@ -81,7 +82,7 @@ trait RepositoryService { self: AccountService =>

        Repositories.filter { t =>
          (t.parentUserName === oldUserName.bind) && (t.parentRepositoryName === oldRepositoryName.bind)
-        }.map { t => t.originUserName -> t.originRepositoryName }.update(newUserName, newRepositoryName)
+        }.map { t => t.parentUserName -> t.parentRepositoryName }.update(newUserName, newRepositoryName)

        // Updates activity fk before deleting repository because activity is sorted by activityId
        // and it can't be changed by deleting-and-inserting record.
@@ -92,17 +93,22 @@ trait RepositoryService { self: AccountService =>

        deleteRepository(oldUserName, oldRepositoryName)

-        WebHooks     .insertAll(webHooks      .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
-        WebHookEvents.insertAll(webHookEvents .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        RepositoryWebHooks     .insertAll(webHooks      .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        RepositoryWebHookEvents.insertAll(webHookEvents .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
        Milestones   .insertAll(milestones    .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        Priorities   .insertAll(priorities    .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
        IssueId      .insertAll(issueId       .map(_.copy(_1       = newUserName, _2             = newRepositoryName)) :_*)

        val newMilestones = Milestones.filter(_.byRepository(newUserName, newRepositoryName)).list
+        val newPriorities = Priorities.filter(_.byRepository(newUserName, newRepositoryName)).list
        Issues.insertAll(issues.map { x => x.copy(
          userName       = newUserName,
          repositoryName = newRepositoryName,
          milestoneId    = x.milestoneId.map { id =>
            newMilestones.find(_.title == milestones.find(_.milestoneId == id).get.title).get.milestoneId
+          },
+          priorityId    = x.priorityId.map { id =>
+            newPriorities.find(_.priorityName == priorities.find(_.priorityId == id).get.priorityName).get.priorityId
          }
        )} :_*)

@@ -129,7 +135,7 @@ trait RepositoryService { self: AccountService =>
          repositoryName = newRepositoryName
        )) :_*)

-        // TODO Drop transfered owner from collaborators?
+        // TODO Drop transferred owner from collaborators?
        Collaborators.insertAll(collaborators.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)

        // Update activity messages
@@ -161,10 +167,11 @@ trait RepositoryService { self: AccountService =>
    IssueComments .filter(_.byRepository(userName, repositoryName)).delete
    PullRequests  .filter(_.byRepository(userName, repositoryName)).delete
    Issues        .filter(_.byRepository(userName, repositoryName)).delete
+    Priorities    .filter(_.byRepository(userName, repositoryName)).delete
    IssueId       .filter(_.byRepository(userName, repositoryName)).delete
    Milestones    .filter(_.byRepository(userName, repositoryName)).delete
-    WebHooks      .filter(_.byRepository(userName, repositoryName)).delete
-    WebHookEvents .filter(_.byRepository(userName, repositoryName)).delete
+    RepositoryWebHooks      .filter(_.byRepository(userName, repositoryName)).delete
+    RepositoryWebHookEvents .filter(_.byRepository(userName, repositoryName)).delete
    DeployKeys    .filter(_.byRepository(userName, repositoryName)).delete
    Repositories  .filter(_.byRepository(userName, repositoryName)).delete

--- a/src/main/scala/gitbucket/core/service/SystemSettingsService.scala
+++ b/src/main/scala/gitbucket/core/service/SystemSettingsService.scala
@@ -1,9 +1,9 @@
 package gitbucket.core.service

-import gitbucket.core.util.{Directory, SyntaxSugars}
 import gitbucket.core.util.Implicits._
-import Directory._
-import SyntaxSugars._
+import gitbucket.core.util.ConfigUtil._
+import gitbucket.core.util.Directory._
+import gitbucket.core.util.SyntaxSugars._
 import SystemSettingsService._
 import javax.servlet.http.HttpServletRequest

@@ -220,23 +220,28 @@ object SystemSettingsService {
  private val LdapSsl = "ldap.ssl"
  private val LdapKeystore = "ldap.keystore"

-  private def getValue[A: ClassTag](props: java.util.Properties, key: String, default: A): A =
-    defining(props.getProperty(key)){ value =>
-      if(value == null || value.isEmpty) default
-      else convertType(value).asInstanceOf[A]
-    }
+  private def getValue[A: ClassTag](props: java.util.Properties, key: String, default: A): A = {
+    getSystemProperty(key).getOrElse(getEnvironmentVariable(key).getOrElse {
+      defining(props.getProperty(key)){ value =>
+        if(value == null || value.isEmpty){
+          default
+        } else {
+          convertType(value).asInstanceOf[A]
+        }
+      }
+    })
+  }

-  private def getOptionValue[A: ClassTag](props: java.util.Properties, key: String, default: Option[A]): Option[A] =
-    defining(props.getProperty(key)){ value =>
-      if(value == null || value.isEmpty) default
-      else Some(convertType(value)).asInstanceOf[Option[A]]
-    }
-
-  private def convertType[A: ClassTag](value: String) =
-    defining(implicitly[ClassTag[A]].runtimeClass){ c =>
-      if(c == classOf[Boolean])  value.toBoolean
-      else if(c == classOf[Int]) value.toInt
-      else value
-    }
+  private def getOptionValue[A: ClassTag](props: java.util.Properties, key: String, default: Option[A]): Option[A] = {
+    getSystemProperty(key).orElse(getEnvironmentVariable(key).orElse {
+      defining(props.getProperty(key)){ value =>
+        if(value == null || value.isEmpty){
+          default
+        } else {
+          Some(convertType(value)).asInstanceOf[Option[A]]
+        }
+      }
+    })
+  }

 }
--- a/src/main/scala/gitbucket/core/service/WebHookService.scala
+++ b/src/main/scala/gitbucket/core/service/WebHookService.scala
@@ -3,12 +3,12 @@ package gitbucket.core.service
 import fr.brouillard.oss.security.xhub.XHub
 import fr.brouillard.oss.security.xhub.XHub.{XHubConverter, XHubDigest}
 import gitbucket.core.api._
-import gitbucket.core.model.{Account, CommitComment, Issue, IssueComment, PullRequest, WebHook, WebHookEvent}
+import gitbucket.core.model.{Account, CommitComment, Issue, IssueComment, PullRequest, WebHook, RepositoryWebHook, RepositoryWebHookEvent, AccountWebHook, AccountWebHookEvent}
 import gitbucket.core.model.Profile._
 import gitbucket.core.model.Profile.profile.blockingApi._
 import org.apache.http.client.utils.URLEncodedUtils
 import gitbucket.core.util.JGitUtil.CommitInfo
-import gitbucket.core.util.RepositoryName
+import gitbucket.core.util.{RepositoryName, StringUtil}
 import gitbucket.core.service.RepositoryService.RepositoryInfo
 import org.apache.http.NameValuePair
 import org.apache.http.client.entity.UrlEncodedFormEntity
@@ -18,7 +18,7 @@ import org.eclipse.jgit.lib.ObjectId
 import org.slf4j.LoggerFactory

 import scala.concurrent._
-import scala.util.{Success, Failure}
+import scala.util.{Failure, Success}
 import org.apache.http.HttpRequest
 import org.apache.http.HttpResponse
 import gitbucket.core.model.WebHookContentType
@@ -32,45 +32,86 @@ trait WebHookService {
  private val logger = LoggerFactory.getLogger(classOf[WebHookService])

  /** get All WebHook informations of repository */
-  def getWebHooks(owner: String, repository: String)(implicit s: Session): List[(WebHook, Set[WebHook.Event])] =
-    WebHooks.filter(_.byRepository(owner, repository))
-      .join(WebHookEvents).on { (w, t) => t.byWebHook(w) }
+  def getWebHooks(owner: String, repository: String)(implicit s: Session): List[(RepositoryWebHook, Set[WebHook.Event])] =
+    RepositoryWebHooks.filter(_.byRepository(owner, repository))
+      .join(RepositoryWebHookEvents).on { (w, t) => t.byRepositoryWebHook(w) }
      .map { case (w, t) => w -> t.event }
      .list.groupBy(_._1).mapValues(_.map(_._2).toSet).toList.sortBy(_._1.url)

  /** get All WebHook informations of repository event */
-  def getWebHooksByEvent(owner: String, repository: String, event: WebHook.Event)(implicit s: Session): List[WebHook] =
-     WebHooks.filter(_.byRepository(owner, repository))
-       .join(WebHookEvents).on { (wh, whe) => whe.byWebHook(wh) }
+  def getWebHooksByEvent(owner: String, repository: String, event: WebHook.Event)(implicit s: Session): List[RepositoryWebHook] =
+    RepositoryWebHooks.filter(_.byRepository(owner, repository))
+       .join(RepositoryWebHookEvents).on { (wh, whe) => whe.byRepositoryWebHook(wh) }
       .filter { case (wh, whe) => whe.event === event.bind}
       .map{ case (wh, whe) => wh }
       .list.distinct

  /** get All WebHook information from repository to url */
-  def getWebHook(owner: String, repository: String, url: String)(implicit s: Session): Option[(WebHook, Set[WebHook.Event])] =
-    WebHooks
+  def getWebHook(owner: String, repository: String, url: String)(implicit s: Session): Option[(RepositoryWebHook, Set[WebHook.Event])] =
+    RepositoryWebHooks
      .filter(_.byPrimaryKey(owner, repository, url))
-      .join(WebHookEvents).on { (w, t) => t.byWebHook(w) }
+      .join(RepositoryWebHookEvents).on { (w, t) => t.byRepositoryWebHook(w) }
      .map { case (w, t) => w -> t.event }
      .list.groupBy(_._1).mapValues(_.map(_._2).toSet).headOption

  def addWebHook(owner: String, repository: String, url :String, events: Set[WebHook.Event], ctype: WebHookContentType, token: Option[String])(implicit s: Session): Unit = {
-    WebHooks insert WebHook(owner, repository, url, ctype, token)
+    RepositoryWebHooks insert RepositoryWebHook(owner, repository, url, ctype, token)
    events.map { event: WebHook.Event =>
-      WebHookEvents insert WebHookEvent(owner, repository, url, event)
+      RepositoryWebHookEvents insert RepositoryWebHookEvent(owner, repository, url, event)
    }
  }

  def updateWebHook(owner: String, repository: String, url :String, events: Set[WebHook.Event], ctype: WebHookContentType, token: Option[String])(implicit s: Session): Unit = {
-    WebHooks.filter(_.byPrimaryKey(owner, repository, url)).map(w => (w.ctype, w.token)).update((ctype, token))
-    WebHookEvents.filter(_.byWebHook(owner, repository, url)).delete
+    RepositoryWebHooks.filter(_.byPrimaryKey(owner, repository, url)).map(w => (w.ctype, w.token)).update((ctype, token))
+    RepositoryWebHookEvents.filter(_.byRepositoryWebHook(owner, repository, url)).delete
    events.map { event: WebHook.Event =>
-      WebHookEvents insert WebHookEvent(owner, repository, url, event)
+      RepositoryWebHookEvents insert RepositoryWebHookEvent(owner, repository, url, event)
    }
  }

  def deleteWebHook(owner: String, repository: String, url :String)(implicit s: Session): Unit =
-    WebHooks.filter(_.byPrimaryKey(owner, repository, url)).delete
+    RepositoryWebHooks.filter(_.byPrimaryKey(owner, repository, url)).delete
+
+  /** get All AccountWebHook informations of user */
+  def getAccountWebHooks(owner: String)(implicit s: Session): List[(AccountWebHook, Set[WebHook.Event])] =
+    AccountWebHooks.filter(_.byAccount(owner))
+      .join(AccountWebHookEvents).on { (w, t) => t.byAccountWebHook(w) }
+      .map { case (w, t) => w -> t.event }
+      .list.groupBy(_._1).mapValues(_.map(_._2).toSet).toList.sortBy(_._1.url)
+
+  /** get All AccountWebHook informations of repository event */
+  def getAccountWebHooksByEvent(owner: String, event: WebHook.Event)(implicit s: Session): List[AccountWebHook] =
+    AccountWebHooks.filter(_.byAccount(owner))
+      .join(AccountWebHookEvents).on { (wh, whe) => whe.byAccountWebHook(wh) }
+      .filter { case (wh, whe) => whe.event === event.bind}
+      .map{ case (wh, whe) => wh }
+      .list.distinct
+
+  /** get All AccountWebHook information from repository to url */
+  def getAccountWebHook(owner: String, url: String)(implicit s: Session): Option[(AccountWebHook, Set[WebHook.Event])] =
+    AccountWebHooks
+      .filter(_.byPrimaryKey(owner, url))
+      .join(AccountWebHookEvents).on { (w, t) => t.byAccountWebHook(w) }
+      .map { case (w, t) => w -> t.event }
+      .list.groupBy(_._1).mapValues(_.map(_._2).toSet).headOption
+
+  def addAccountWebHook(owner: String, url :String, events: Set[WebHook.Event], ctype: WebHookContentType, token: Option[String])(implicit s: Session): Unit = {
+    AccountWebHooks insert AccountWebHook(owner, url, ctype, token)
+    events.map { event: WebHook.Event =>
+      AccountWebHookEvents insert AccountWebHookEvent(owner, url, event)
+    }
+  }
+
+  def updateAccountWebHook(owner: String, url :String, events: Set[WebHook.Event], ctype: WebHookContentType, token: Option[String])(implicit s: Session): Unit = {
+    AccountWebHooks.filter(_.byPrimaryKey(owner, url)).map(w => (w.ctype, w.token)).update((ctype, token))
+    AccountWebHookEvents.filter(_.byAccountWebHook(owner, url)).delete
+    events.map { event: WebHook.Event =>
+      AccountWebHookEvents insert AccountWebHookEvent(owner, url, event)
+    }
+  }
+
+  def deleteAccountWebHook(owner: String, url :String)(implicit s: Session): Unit =
+    AccountWebHooks.filter(_.byPrimaryKey(owner, url)).delete

  def callWebHookOf(owner: String, repository: String, event: WebHook.Event)(makePayload: => Option[WebHookPayload])
                   (implicit s: Session, c: JsonFormat.Context): Unit = {
@@ -78,6 +119,10 @@ trait WebHookService {
    if(webHooks.nonEmpty){
      makePayload.map(callWebHook(event, webHooks, _))
    }
+    val accountWebHooks = getAccountWebHooksByEvent(owner, event)
+    if(accountWebHooks.nonEmpty){
+      makePayload.map(callWebHook(event, accountWebHooks, _))
+    }
  }

  def callWebHook(event: WebHook.Event, webHooks: List[WebHook], payload: WebHookPayload)
@@ -160,7 +205,7 @@ trait WebHookPullRequestService extends WebHookService {
  import WebHookService._
  // https://developer.github.com/v3/activity/events/types/#issuesevent
  def callIssuesWebHook(action: String, repository: RepositoryService.RepositoryInfo, issue: Issue, baseUrl: String, sender: Account)
-                       (implicit s: Session, context:JsonFormat.Context): Unit = {
+                       (implicit s: Session, context: JsonFormat.Context): Unit = {
    callWebHookOf(repository.owner, repository.name, WebHook.Issues){
      val users = getAccountsByUserNames(Set(repository.owner, issue.openedUserName), Set(sender))
      for{
@@ -178,7 +223,7 @@ trait WebHookPullRequestService extends WebHookService {
  }

  def callPullRequestWebHook(action: String, repository: RepositoryService.RepositoryInfo, issueId: Int, baseUrl: String, sender: Account)
-                            (implicit s: Session, context:JsonFormat.Context): Unit = {
+                            (implicit s: Session, c: JsonFormat.Context): Unit = {
    import WebHookService._
    callWebHookOf(repository.owner, repository.name, WebHook.PullRequest){
      for{
@@ -207,7 +252,7 @@ trait WebHookPullRequestService extends WebHookService {

  /** @return Map[(issue, issueUser, pullRequest, baseOwner, headOwner), webHooks] */
  def getPullRequestsByRequestForWebhook(userName:String, repositoryName:String, branch:String)
-                                       (implicit s: Session): Map[(Issue, Account, PullRequest, Account, Account), List[WebHook]] =
+                                       (implicit s: Session): Map[(Issue, Account, PullRequest, Account, Account), List[RepositoryWebHook]] =
    (for{
      is <- Issues if is.closed    === false.bind
      pr <- PullRequests if pr.byPrimaryKey(is.userName, is.repositoryName, is.issueId)
@@ -217,14 +262,14 @@ trait WebHookPullRequestService extends WebHookService {
      bu <- Accounts if bu.userName === pr.userName
      ru <- Accounts if ru.userName === pr.requestUserName
      iu <- Accounts if iu.userName === is.openedUserName
-      wh <- WebHooks if wh.byRepository(is.userName , is.repositoryName)
-      wht <- WebHookEvents if wht.event === WebHook.PullRequest.asInstanceOf[WebHook.Event].bind && wht.byWebHook(wh)
+      wh <- RepositoryWebHooks if wh.byRepository(is.userName , is.repositoryName)
+      wht <- RepositoryWebHookEvents if wht.event === WebHook.PullRequest.asInstanceOf[WebHook.Event].bind && wht.byRepositoryWebHook(wh)
    } yield {
      ((is, iu, pr, bu, ru), wh)
    }).list.groupBy(_._1).mapValues(_.map(_._2))

  def callPullRequestWebHookByRequestBranch(action: String, requestRepository: RepositoryService.RepositoryInfo, requestBranch: String, baseUrl: String, sender: Account)
-                                           (implicit s: Session, context:JsonFormat.Context): Unit = {
+                                           (implicit s: Session, c: JsonFormat.Context): Unit = {
    import WebHookService._
    for{
      ((issue, issueUser, pullRequest, baseOwner, headOwner), webHooks) <- getPullRequestsByRequestForWebhook(requestRepository.owner, requestRepository.name, requestBranch)
@@ -246,12 +291,13 @@ trait WebHookPullRequestService extends WebHookService {
      callWebHook(WebHook.PullRequest, webHooks, payload)
    }
  }
+
 }

 trait WebHookPullRequestReviewCommentService extends WebHookService {
  self: AccountService with RepositoryService with PullRequestService with IssuesService with CommitsService =>
  def callPullRequestReviewCommentWebHook(action: String, comment: CommitComment, repository: RepositoryService.RepositoryInfo, issueId: Int, baseUrl: String, sender: Account)
-                                         (implicit s: Session, context:JsonFormat.Context): Unit = {
+                                         (implicit s: Session, c: JsonFormat.Context): Unit = {
    import WebHookService._
    callWebHookOf(repository.owner, repository.name, WebHook.PullRequestReviewComment){
      for{
@@ -285,7 +331,7 @@ trait WebHookIssueCommentService extends WebHookPullRequestService {

  import WebHookService._
  def callIssueCommentWebHook(repository: RepositoryService.RepositoryInfo, issue: Issue, issueCommentId: Int, sender: Account)
-                             (implicit s: Session, context:JsonFormat.Context): Unit = {
+                             (implicit s: Session, c: JsonFormat.Context): Unit = {
    callWebHookOf(repository.owner, repository.name, WebHook.IssueComment){
      for{
        issueComment <- getComment(repository.owner, repository.name, issueCommentId.toString())
@@ -321,9 +367,9 @@ object WebHookService {
    repository: ApiRepository
  ) extends FieldSerializable with WebHookPayload {
    val compare = commits.size match {
-      case 0 => ApiPath(s"/${repository.full_name}") // maybe test hook on un-initalied repository
+      case 0 => ApiPath(s"/${repository.full_name}") // maybe test hook on un-initialized repository
      case 1 => ApiPath(s"/${repository.full_name}/commit/${after}")
-      case _ if before.filterNot(_=='0').isEmpty => ApiPath(s"/${repository.full_name}/compare/${commits.head.id}^...${after}")
+      case _ if before.forall(_=='0') => ApiPath(s"/${repository.full_name}/compare/${commits.head.id}^...${after}")
      case _ => ApiPath(s"/${repository.full_name}/compare/${before}...${after}")
    }
    val head_commit = commits.lastOption
@@ -344,6 +390,17 @@ object WebHookService {
          repositoryInfo,
          owner= ApiUser(repositoryOwner))
      )
+
+    def createDummyPayload(sender: Account): WebHookPushPayload =
+      WebHookPushPayload(
+        pusher = ApiPusher(sender),
+        sender = ApiUser(sender),
+        ref = "refs/heads/master",
+        before = "adc83b19e793491b1c6ea0fd8b46cd9f32e592fc",
+        after = "adc83b19e793491b1c6ea0fd8b46cd9f32e592fc",
+        commits = List.empty,
+        repository = ApiRepository.forDummyPayload(ApiUser(sender))
+      )
  }

  // https://developer.github.com/v3/activity/events/types/#issuesevent
@@ -470,4 +527,53 @@ object WebHookService {
        sender       = senderPayload)
    }
  }
+
+  // https://developer.github.com/v3/activity/events/types/#gollumevent
+  case class WebHookGollumPayload(
+    pages: Seq[WebHookGollumPagePayload],
+    repository: ApiRepository,
+    sender: ApiUser
+  ) extends WebHookPayload
+
+  case class WebHookGollumPagePayload(
+    page_name: String,
+    title: String,
+    summary: Option[String] = None,
+    action: String, // created or edited
+    sha: String, // SHA of the latest commit
+    html_url: ApiPath
+  )
+
+  object WebHookGollumPayload {
+    def apply(
+      action: String,
+      pageName: String,
+      sha: String,
+      repository: RepositoryInfo,
+      repositoryUser: Account,
+      sender: Account
+    ): WebHookGollumPayload = apply(Seq((action, pageName, sha)), repository, repositoryUser, sender)
+
+    def apply(
+      pages: Seq[(String, String, String)],
+      repository: RepositoryInfo,
+      repositoryUser: Account,
+      sender: Account
+    ): WebHookGollumPayload = {
+      WebHookGollumPayload(
+        pages = pages.map { case (action, pageName, sha) =>
+          WebHookGollumPagePayload(
+            action = action,
+            page_name = pageName,
+            title = pageName,
+            sha = sha,
+            html_url = ApiPath(s"/${RepositoryName(repository).fullName}/wiki/${StringUtil.urlDecode(pageName)}")
+          )
+        },
+        repository = ApiRepository(repository, repositoryUser),
+        sender = ApiUser(sender)
+      )
+    }
+  }
+
 }
--- a/src/main/scala/gitbucket/core/service/WikiService.scala
+++ b/src/main/scala/gitbucket/core/service/WikiService.scala
@@ -237,7 +237,7 @@ trait WikiService {
          builder.finish()
          val newHeadId = JGitUtil.createNewCommit(git, inserter, headId, builder.getDirCache.writeTree(inserter),
            Constants.HEAD, committer.fullName, committer.mailAddress,
-            if(message.trim.length == 0) {
+            if(message.trim.isEmpty) {
              if(removed){
                s"Rename ${currentPageName} to ${newPageName}"
              } else if(created){
--- a/src/main/scala/gitbucket/core/servlet/GHCompatRepositoryAccessFilter.scala
+++ b/src/main/scala/gitbucket/core/servlet/GHCompatRepositoryAccessFilter.scala
@@ -23,10 +23,11 @@ class GHCompatRepositoryAccessFilter extends Filter with SystemSettingsService {
    val agent = request.getHeader("USER-AGENT")
    val response = res.asInstanceOf[HttpServletResponse]
    val requestPath = request.getRequestURI.substring(request.getContextPath.length)
+    val queryString = if (request.getQueryString != null) "?" + request.getQueryString else ""

    requestPath match {
      case githubRepositoryPattern() if agent != null && agent.toLowerCase.indexOf("git") >= 0 =>
-        response.sendRedirect(baseUrl + "/git" + requestPath)
+        response.sendRedirect(baseUrl + "/git" + requestPath + queryString)
      case _ =>
        chain.doFilter(req, res)
    }
--- a/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
@@ -51,21 +51,21 @@ class GitAuthenticationFilter extends Filter with RepositoryService with Account

  private def pluginRepository(request: HttpServletRequest, response: HttpServletResponse, chain: FilterChain,
                               settings: SystemSettings, isUpdating: Boolean, filter: GitRepositoryFilter): Unit = {
-    implicit val r = request
+    Database() withSession { implicit session =>
+      val account = for {
+        auth <- Option(request.getHeader("Authorization"))
+        Array(username, password) = AuthUtil.decodeAuthHeader(auth).split(":", 2)
+        account <- authenticate(settings, username, password)
+      } yield {
+        request.setAttribute(Keys.Request.UserName, account.userName)
+        account
+      }

-    val account = for {
-      auth <- Option(request.getHeader("Authorization"))
-      Array(username, password) = AuthUtil.decodeAuthHeader(auth).split(":", 2)
-      account <- authenticate(settings, username, password)
-    } yield {
-      request.setAttribute(Keys.Request.UserName, account.userName)
-      account
-    }
-
-    if(filter.filter(request.gitRepositoryPath, account.map(_.userName), settings, isUpdating)){
-      chain.doFilter(request, response)
-    } else {
-      AuthUtil.requireAuth(response)
+      if (filter.filter(request.gitRepositoryPath, account.map(_.userName), settings, isUpdating)) {
+        chain.doFilter(request, response)
+      } else {
+        AuthUtil.requireAuth(response)
+      }
    }
  }

@@ -74,7 +74,7 @@ class GitAuthenticationFilter extends Filter with RepositoryService with Account
    val action = request.paths match {
      case Array(_, repositoryOwner, repositoryName, _*) =>
        Database() withSession { implicit session =>
-          getRepository(repositoryOwner, repositoryName.replaceFirst("\\.wiki\\.git$|\\.git$", "")) match {
+          getRepository(repositoryOwner, repositoryName.replaceFirst("(\\.wiki)?\\.git$", "")) match {
            case Some(repository) => {
              val execute = if (!isUpdating && !repository.repository.isPrivate && settings.allowAnonymousAccess) {
                // Authentication is not required
--- a/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
@@ -1,6 +1,7 @@
 package gitbucket.core.servlet

 import java.io.File
+import java.util
 import java.util.Date

 import gitbucket.core.api
@@ -22,6 +23,7 @@ import org.slf4j.LoggerFactory
 import javax.servlet.ServletConfig
 import javax.servlet.http.{HttpServletRequest, HttpServletResponse}

+import org.eclipse.jgit.diff.DiffEntry.ChangeType
 import org.json4s.jackson.Serialization._


@@ -161,6 +163,12 @@ class GitBucketReceivePackFactory extends ReceivePackFactory[HttpServletRequest]
            receivePack.setPostReceiveHook(hook)
          }
        }
+
+        if(repository.endsWith(".wiki")){
+          defining(request) { implicit r =>
+            receivePack.setPostReceiveHook(new WikiCommitHook(owner, repository.stripSuffix(".wiki"), pusher, baseUrl))
+          }
+        }
      }
    }

@@ -170,7 +178,7 @@ class GitBucketReceivePackFactory extends ReceivePackFactory[HttpServletRequest]

 import scala.collection.JavaConverters._

-class CommitLogHook(owner: String, repository: String, pusher: String, baseUrl: String)/*(implicit session: Session)*/
+class CommitLogHook(owner: String, repository: String, pusher: String, baseUrl: String)
  extends PostReceiveHook with PreReceiveHook
  with RepositoryService with AccountService with IssuesService with ActivityService with PullRequestService with WebHookService
  with WebHookPullRequestService with CommitsService {
@@ -185,9 +193,10 @@ class CommitLogHook(owner: String, repository: String, pusher: String, baseUrl:
          // call pre-commit hook
          PluginRegistry().getReceiveHooks
            .flatMap(_.preReceive(owner, repository, receivePack, command, pusher))
-            .headOption.foreach { error =>
-            command.setResult(ReceiveCommand.Result.REJECTED_OTHER_REASON, error)
-          }
+            .headOption
+            .foreach { error =>
+              command.setResult(ReceiveCommand.Result.REJECTED_OTHER_REASON, error)
+            }
        }
        using(Git.open(Directory.getRepositoryDir(owner, repository))) { git =>
          existIds = JGitUtil.getAllCommitIds(git)
@@ -285,8 +294,10 @@ class CommitLogHook(owner: String, repository: String, pusher: String, baseUrl:

            // call web hook
            callWebHookOf(owner, repository, WebHook.Push) {
-              for (pusherAccount <- getAccountByUserName(pusher);
-                   ownerAccount <- getAccountByUserName(owner)) yield {
+              for {
+                pusherAccount <- getAccountByUserName(pusher)
+                ownerAccount  <- getAccountByUserName(owner)
+              } yield {
                WebHookPushPayload(git, pusherAccount, command.getRefName, repositoryInfo, newCommits, ownerAccount,
                  newId = command.getNewId(), oldId = command.getOldId())
              }
@@ -309,6 +320,67 @@ class CommitLogHook(owner: String, repository: String, pusher: String, baseUrl:

 }

+class WikiCommitHook(owner: String, repository: String, pusher: String, baseUrl: String)
+  extends PostReceiveHook with WebHookService with AccountService with RepositoryService {
+
+  private val logger = LoggerFactory.getLogger(classOf[WikiCommitHook])
+
+  override def onPostReceive(receivePack: ReceivePack, commands: util.Collection[ReceiveCommand]): Unit = {
+    Database() withTransaction { implicit session =>
+      try {
+        commands.asScala.headOption.foreach { command =>
+          implicit val apiContext = api.JsonFormat.Context(baseUrl)
+          val refName = command.getRefName.split("/")
+          val commitIds = if (refName(1) == "tags") {
+            None
+          } else {
+            command.getType match {
+              case ReceiveCommand.Type.DELETE => None
+              case _ => Some((command.getOldId.getName, command.getNewId.name))
+            }
+          }
+
+          commitIds.map { case (oldCommitId, newCommitId) =>
+            val commits = using(Git.open(Directory.getWikiRepositoryDir(owner, repository))) { git =>
+              JGitUtil.getCommitLog(git, oldCommitId, newCommitId).flatMap { commit =>
+                val diffs = JGitUtil.getDiffs(git, commit.id, false)
+                diffs._1.collect { case diff if diff.newPath.toLowerCase.endsWith(".md") =>
+                  val action = if(diff.changeType == ChangeType.ADD) "created" else "edited"
+                  val fileName = diff.newPath
+                  println(action + " - " + fileName + " - " + commit.id)
+                  (action, fileName, commit.id)
+                }
+              }
+            }
+
+            val pages = commits
+              .groupBy { case (action, fileName, commitId) => fileName }
+              .map { case (fileName, commits) =>
+                (commits.head._1, fileName, commits.last._3)
+              }
+
+            callWebHookOf(owner, repository, WebHook.Gollum) {
+              for {
+                pusherAccount  <- getAccountByUserName(pusher)
+                repositoryUser <- getAccountByUserName(owner)
+                repositoryInfo <- getRepository(owner, repository)
+              } yield {
+                WebHookGollumPayload(pages.toSeq, repositoryInfo, repositoryUser, pusherAccount)
+              }
+            }
+          }
+        }
+      } catch {
+        case ex: Exception => {
+          logger.error(ex.toString, ex)
+          throw ex
+        }
+      }
+    }
+  }
+
+}
+
 object GitLfs {

  case class BatchRequest(
--- a/src/main/scala/gitbucket/core/servlet/InitializeListener.scala
+++ b/src/main/scala/gitbucket/core/servlet/InitializeListener.scala
@@ -1,25 +1,30 @@
 package gitbucket.core.servlet

-import java.io.File
+import java.io.{File, FileOutputStream}

 import akka.event.Logging
 import com.typesafe.config.ConfigFactory
 import gitbucket.core.GitBucketCoreModule
-import gitbucket.core.plugin.PluginRegistry
+import gitbucket.core.plugin.{PluginRegistry, PluginRepository}
 import gitbucket.core.service.{ActivityService, SystemSettingsService}
 import gitbucket.core.util.DatabaseConfig
 import gitbucket.core.util.Directory._
+import gitbucket.core.util.SyntaxSugars._
 import gitbucket.core.util.JDBCUtil._
 import gitbucket.core.model.Profile.profile.blockingApi._
 import io.github.gitbucket.solidbase.Solidbase
 import io.github.gitbucket.solidbase.manager.JDBCVersionManager
-import javax.servlet.{ServletContextListener, ServletContextEvent}
-import org.apache.commons.io.FileUtils
+import javax.servlet.{ServletContextEvent, ServletContextListener}
+
+import org.apache.commons.io.{FileUtils, IOUtils}
 import org.slf4j.LoggerFactory
-import akka.actor.{Actor, Props, ActorSystem}
+import akka.actor.{Actor, ActorSystem, Props}
 import com.typesafe.akka.extension.quartz.QuartzSchedulerExtension
+import com.github.zafarkhaja.semver.{Version => Semver}
+
 import scala.collection.JavaConverters._

+
 /**
 * Initialize GitBucket system.
 * Update database schema and load plug-ins automatically in the context initializing.
@@ -54,44 +59,11 @@ class InitializeListener extends ServletContextListener with SystemSettingsServi
      val manager = new JDBCVersionManager(conn)

      // Check version
-      val versionFile = new File(GitBucketHome, "version")
-
-      if(versionFile.exists()){
-        val version = FileUtils.readFileToString(versionFile, "UTF-8")
-        if(version == "3.14"){
-          // Initialization for GitBucket 3.14
-          logger.info("Migration to GitBucket 4.x start")
-
-          // Backup current data
-          val dataMvFile = new File(GitBucketHome, "data.mv.db")
-          if(dataMvFile.exists) {
-            FileUtils.copyFile(dataMvFile, new File(GitBucketHome, "data.mv.db_3.14"))
-          }
-          val dataTraceFile = new File(GitBucketHome, "data.trace.db")
-          if(dataTraceFile.exists) {
-            FileUtils.copyFile(dataTraceFile, new File(GitBucketHome, "data.trace.db_3.14"))
-          }
-
-          // Change form
-          manager.initialize()
-          manager.updateVersion(GitBucketCoreModule.getModuleId, "4.0.0")
-          conn.select("SELECT PLUGIN_ID, VERSION FROM PLUGIN"){ rs =>
-            manager.updateVersion(rs.getString("PLUGIN_ID"), rs.getString("VERSION"))
-          }
-          conn.update("DROP TABLE PLUGIN")
-          versionFile.delete()
-
-          logger.info("Migration to GitBucket 4.x completed")
-
-        } else {
-          throw new Exception("GitBucket can't migrate from this version. Please update to 3.14 at first.")
-        }
-      }
+      checkVersion(manager, conn)

      // Run normal migration
      logger.info("Start schema update")
-      val solidbase = new Solidbase()
-      solidbase.migrate(conn, Thread.currentThread.getContextClassLoader, DatabaseConfig.liquiDriver, GitBucketCoreModule)
+      new Solidbase().migrate(conn, Thread.currentThread.getContextClassLoader, DatabaseConfig.liquiDriver, GitBucketCoreModule)

      // Rescue code for users who updated from 3.14 to 4.0.0
      // https://github.com/gitbucket/gitbucket/issues/1227
@@ -106,6 +78,9 @@ class InitializeListener extends ServletContextListener with SystemSettingsServi
        throw new IllegalStateException(s"Initialization failed. GitBucket version is ${gitbucketVersion}, but database version is ${databaseVersion}.")
      }

+      // Install bundled plugins
+      extractBundledPlugins(gitbucketVersion)
+
      // Load plugins
      logger.info("Initialize plugins")
      PluginRegistry.initialize(event.getServletContext, loadSystemSettings(), conn)
@@ -117,7 +92,76 @@ class InitializeListener extends ServletContextListener with SystemSettingsServi
    scheduler.schedule("Daily", system.actorOf(Props[DeleteOldActivityActor]), "DeleteOldActivity")
  }

+  private def checkVersion(manager: JDBCVersionManager, conn: java.sql.Connection): Unit = {
+    logger.info("Check version")
+    val versionFile = new File(GitBucketHome, "version")

+    if(versionFile.exists()){
+      val version = FileUtils.readFileToString(versionFile, "UTF-8")
+      if(version == "3.14"){
+        // Initialization for GitBucket 3.14
+        logger.info("Migration to GitBucket 4.x start")
+
+        // Backup current data
+        val dataMvFile = new File(GitBucketHome, "data.mv.db")
+        if(dataMvFile.exists) {
+          FileUtils.copyFile(dataMvFile, new File(GitBucketHome, "data.mv.db_3.14"))
+        }
+        val dataTraceFile = new File(GitBucketHome, "data.trace.db")
+        if(dataTraceFile.exists) {
+          FileUtils.copyFile(dataTraceFile, new File(GitBucketHome, "data.trace.db_3.14"))
+        }
+
+        // Change form
+        manager.initialize()
+        manager.updateVersion(GitBucketCoreModule.getModuleId, "4.0.0")
+        conn.select("SELECT PLUGIN_ID, VERSION FROM PLUGIN"){ rs =>
+          manager.updateVersion(rs.getString("PLUGIN_ID"), rs.getString("VERSION"))
+        }
+        conn.update("DROP TABLE PLUGIN")
+        versionFile.delete()
+
+        logger.info("Migration to GitBucket 4.x completed")
+
+      } else {
+        throw new Exception("GitBucket can't migrate from this version. Please update to 3.14 at first.")
+      }
+    }
+  }
+
+  private def extractBundledPlugins(gitbucketVersion: String): Unit = {
+    logger.info("Extract bundled plugins")
+    val cl = Thread.currentThread.getContextClassLoader
+    try {
+      using(cl.getResourceAsStream("plugins/plugins.json")){ pluginsFile =>
+        if(pluginsFile != null){
+          val pluginsJson = IOUtils.toString(pluginsFile, "UTF-8")
+
+          FileUtils.forceMkdir(PluginRepository.LocalRepositoryDir)
+          FileUtils.write(PluginRepository.LocalRepositoryIndexFile, pluginsJson, "UTF-8")
+
+          val plugins = PluginRepository.parsePluginJson(pluginsJson)
+          plugins.foreach { plugin =>
+            plugin.versions.sortBy { x => Semver.valueOf(x.version) }.reverse.zipWithIndex.foreach { case (version, i) =>
+              val file = new File(PluginRepository.LocalRepositoryDir, version.file)
+              if(!file.exists) {
+                logger.info(s"Copy ${plugin} to ${file.getAbsolutePath}")
+                FileUtils.forceMkdirParent(file)
+                using(cl.getResourceAsStream("plugins/" + version.file), new FileOutputStream(file)){ case (in, out) => IOUtils.copy(in, out) }
+
+                if(plugin.default && i == 0){
+                  logger.info(s"Enable ${file.getName} in default")
+                  FileUtils.copyFile(file, new File(PluginHome, version.file))
+                }
+              }
+            }
+          }
+        }
+      }
+    } catch {
+      case e: Exception => logger.error("Error in extracting bundled plugin", e)
+    }
+  }

  override def contextDestroyed(event: ServletContextEvent): Unit = {
    // Shutdown Quartz scheduler
@@ -146,4 +190,4 @@ class DeleteOldActivityActor extends Actor with SystemSettingsService with Activ
      }
    }
  }
-}
+}
--- a/src/main/scala/gitbucket/core/servlet/PluginAssetsServlet.scala
+++ b/src/main/scala/gitbucket/core/servlet/PluginAssetsServlet.scala
@@ -19,7 +19,7 @@ class PluginAssetsServlet extends HttpServlet {
      .find    { case (prefix, _, _) => path.startsWith("/plugin-assets" + prefix) }
      .flatMap { case (prefix, resourcePath, classLoader) =>
        val resourceName = path.substring(("/plugin-assets" + prefix).length)
-        Option(classLoader.getResourceAsStream(resourcePath.replaceFirst("^/", "") + resourceName))
+        Option(classLoader.getResourceAsStream(resourcePath.stripPrefix("/") + resourceName))
      }
      .map { in =>
        try {
--- a/src/main/scala/gitbucket/core/servlet/PluginControllerFilter.scala
+++ b/src/main/scala/gitbucket/core/servlet/PluginControllerFilter.scala
@@ -0,0 +1,45 @@
+package gitbucket.core.servlet
+
+import javax.servlet._
+import javax.servlet.http.HttpServletRequest
+
+import gitbucket.core.controller.ControllerBase
+import gitbucket.core.plugin.PluginRegistry
+
+class PluginControllerFilter extends Filter {
+
+  private var filterConfig: FilterConfig = null
+
+  override def init(filterConfig: FilterConfig): Unit = {
+    this.filterConfig = filterConfig
+  }
+
+  override def destroy(): Unit = {
+    PluginRegistry().getControllers().foreach { case (controller, _) =>
+      controller.destroy()
+    }
+  }
+
+  override def doFilter(request: ServletRequest, response: ServletResponse, chain: FilterChain): Unit = {
+    val controller = PluginRegistry().getControllers().filter { case (_, path) =>
+      val requestUri = request.asInstanceOf[HttpServletRequest].getRequestURI
+      val start = path.replaceFirst("/\\*$", "/")
+      path.endsWith("/*") && (requestUri + "/").startsWith(start)
+    }
+
+    val filterChainWrapper = controller.foldLeft(chain){ case (chain, (controller, _)) =>
+      new FilterChainWrapper(controller, chain)
+    }
+    filterChainWrapper.doFilter(request, response)
+  }
+
+  class FilterChainWrapper(controller: ControllerBase, chain: FilterChain) extends FilterChain {
+    override def doFilter(request: ServletRequest, response: ServletResponse): Unit = {
+      if(controller.config == null){
+        controller.init(filterConfig)
+      }
+      controller.doFilter(request, response, chain)
+    }
+  }
+
+}
--- a/src/main/scala/gitbucket/core/ssh/SshServerListener.scala
+++ b/src/main/scala/gitbucket/core/ssh/SshServerListener.scala
@@ -6,7 +6,7 @@ import javax.servlet.{ServletContextEvent, ServletContextListener}

 import gitbucket.core.service.SystemSettingsService
 import gitbucket.core.service.SystemSettingsService.SshAddress
-import gitbucket.core.util.{Directory}
+import gitbucket.core.util.Directory
 import org.apache.sshd.server.keyprovider.SimpleGeneratorHostKeyProvider
 import org.slf4j.LoggerFactory

--- a/src/main/scala/gitbucket/core/util/DatabaseConfig.scala
+++ b/src/main/scala/gitbucket/core/util/DatabaseConfig.scala
@@ -4,11 +4,15 @@ import com.typesafe.config.ConfigFactory
 import java.io.File

 import Directory._
-import com.github.takezoe.slick.blocking.{BlockingH2Driver, BlockingMySQLDriver, BlockingJdbcProfile}
+import ConfigUtil._
+import com.github.takezoe.slick.blocking.{BlockingH2Driver, BlockingJdbcProfile, BlockingMySQLDriver}
+import gitbucket.core.util.SyntaxSugars.defining
 import liquibase.database.AbstractJdbcDatabase
 import liquibase.database.core.{H2Database, MySQLDatabase, PostgresDatabase}
 import org.apache.commons.io.FileUtils

+import scala.reflect.ClassTag
+
 object DatabaseConfig {

  private lazy val config = {
@@ -30,14 +34,14 @@ object DatabaseConfig {
    ConfigFactory.parseFile(file)
  }

-  private lazy val dbUrl = config.getString("db.url")
+  private lazy val dbUrl = getValue("db.url", config.getString) //config.getString("db.url")

  def url(directory: Option[String]): String =
    dbUrl.replace("${DatabaseHome}", directory.getOrElse(DatabaseHome))

  lazy val url                : String = url(None)
-  lazy val user               : String = config.getString("db.user")
-  lazy val password           : String = config.getString("db.password")
+  lazy val user               : String = getValue("db.user", config.getString)
+  lazy val password           : String = getValue("db.password", config.getString)
  lazy val jdbcDriver         : String = DatabaseType(url).jdbcDriver
  lazy val slickDriver        : BlockingJdbcProfile  = DatabaseType(url).slickDriver
  lazy val liquiDriver        : AbstractJdbcDatabase = DatabaseType(url).liquiDriver
@@ -47,8 +51,16 @@ object DatabaseConfig {
  lazy val minimumIdle        : Option[Int]    = getOptionValue("db.minimumIdle"      , config.getInt)
  lazy val maximumPoolSize    : Option[Int]    = getOptionValue("db.maximumPoolSize"  , config.getInt)

+  private def getValue[T](path: String, f: String => T): T = {
+    getSystemProperty(path).getOrElse(getEnvironmentVariable(path).getOrElse{
+      f(path)
+    })
+  }
+
  private def getOptionValue[T](path: String, f: String => T): Option[T] = {
-    if(config.hasPath(path)) Some(f(path)) else None
+    getSystemProperty(path).orElse(getEnvironmentVariable(path).orElse {
+      if(config.hasPath(path)) Some(f(path)) else None
+    })
  }

 }
@@ -80,7 +92,7 @@ object DatabaseType {
  }

  object MySQL extends DatabaseType {
-    val jdbcDriver = "com.mysql.jdbc.Driver"
+    val jdbcDriver = "org.mariadb.jdbc.Driver"
    val slickDriver = BlockingMySQLDriver
    val liquiDriver = new MySQLDatabase()
  }
@@ -99,3 +111,33 @@ object DatabaseType {
    }
  }
 }
+
+object ConfigUtil {
+
+  def getEnvironmentVariable[A](key: String): Option[A] = {
+    val value = System.getenv("GITBUCKET_" + key.toUpperCase.replace('.', '_'))
+    if(value != null && value.nonEmpty){
+      Some(convertType(value)).asInstanceOf[Option[A]]
+    } else {
+      None
+    }
+  }
+
+  def getSystemProperty[A](key: String): Option[A] = {
+    val value = System.getProperty("gitbucket." + key)
+    if(value != null && value.nonEmpty){
+      Some(convertType(value)).asInstanceOf[Option[A]]
+    } else {
+      None
+    }
+  }
+
+  def convertType[A: ClassTag](value: String) =
+    defining(implicitly[ClassTag[A]].runtimeClass){ c =>
+      if(c == classOf[Boolean])  value.toBoolean
+      else if(c == classOf[Long]) value.toLong
+      else if(c == classOf[Int]) value.toInt
+      else value
+    }
+
+}
--- a/src/main/scala/gitbucket/core/util/Directory.scala
+++ b/src/main/scala/gitbucket/core/util/Directory.scala
@@ -90,4 +90,4 @@ object Directory {
  def getWikiRepositoryDir(owner: String, repository: String): File =
    new File(s"${RepositoryHome}/${owner}/${repository}.wiki.git")

-}
+}
--- a/src/main/scala/gitbucket/core/util/FileUtil.scala
+++ b/src/main/scala/gitbucket/core/util/FileUtil.scala
@@ -68,9 +68,24 @@ object FileUtil {

  def readableSize(size: Long): String = FileUtils.byteCountToDisplaySize(size)

+  /**
+   * Delete the given directory if it's empty.
+   * Do nothing if the given File is not a directory or not empty.
+   */
  def deleteDirectoryIfEmpty(dir: File): Unit = {
    if(dir.isDirectory() && dir.list().isEmpty) {
      FileUtils.deleteDirectory(dir)
    }
  }
+
+  /**
+   * Delete file or directory forcibly.
+   */
+  def deleteIfExists(file: java.io.File): java.io.File = {
+    if(file.exists){
+      FileUtils.forceDelete(file)
+    }
+    file
+  }
+
 }
--- a/src/main/scala/gitbucket/core/util/JDBCUtil.scala
+++ b/src/main/scala/gitbucket/core/util/JDBCUtil.scala
@@ -75,7 +75,7 @@ object JDBCUtil {
          var stringLiteral = false

          while({ length = in.read(bytes); length != -1 }){
-            for(i <- 0 to length - 1){
+            for(i <- 0 until length){
              val c = bytes(i)
              if(c == '\''){
                stringLiteral = !stringLiteral
@@ -146,13 +146,11 @@ object JDBCUtil {
                }
              }

-              val columnValues = values.map { value =>
-                value match {
-                  case x: String    => "'" + x.replace("'", "''") + "'"
-                  case x: Timestamp => "'" + dateFormat.format(x) + "'"
-                  case null         => "NULL"
-                  case x            => x
-                }
+              val columnValues = values.map { 
+                case x: String    => "'" + x.replace("'", "''") + "'"
+                case x: Timestamp => "'" + dateFormat.format(x) + "'"
+                case null         => "NULL"
+                case x            => x
              }
              sb.append(columnValues.mkString(", "))
              sb.append(");\n")
--- a/src/main/scala/gitbucket/core/util/JGitUtil.scala
+++ b/src/main/scala/gitbucket/core/util/JGitUtil.scala
@@ -14,7 +14,7 @@ import org.eclipse.jgit.revwalk.filter._
 import org.eclipse.jgit.treewalk._
 import org.eclipse.jgit.treewalk.filter._
 import org.eclipse.jgit.diff.DiffEntry.ChangeType
-import org.eclipse.jgit.errors.{ConfigInvalidException, MissingObjectException}
+import org.eclipse.jgit.errors.{ConfigInvalidException, IncorrectObjectTypeException, MissingObjectException}
 import org.eclipse.jgit.transport.RefSpec
 import java.util.Date
 import java.util.concurrent.TimeUnit
@@ -93,7 +93,7 @@ object JGitUtil {

    val summary = getSummaryMessage(fullMessage, shortMessage)

-    val description = defining(fullMessage.trim.indexOf("\n")){ i =>
+    val description = defining(fullMessage.trim.indexOf('\n')){ i =>
      if(i >= 0){
        Some(fullMessage.trim.substring(i).trim)
      } else None
@@ -226,9 +226,14 @@ object JGitUtil {
            ref.getName.stripPrefix("refs/heads/")
          }.toList,
          // tags
-          git.tagList.call.asScala.map { ref =>
-            val revCommit = getRevCommitFromId(git, ref.getObjectId)
-            TagInfo(ref.getName.stripPrefix("refs/tags/"), revCommit.getCommitterIdent.getWhen, revCommit.getName)
+          git.tagList.call.asScala.flatMap { ref =>
+            try {
+              val revCommit = getRevCommitFromId(git, ref.getObjectId)
+              Some(TagInfo(ref.getName.stripPrefix("refs/tags/"), revCommit.getCommitterIdent.getWhen, revCommit.getName))
+            } catch {
+              case _: IncorrectObjectTypeException =>
+                None
+            }
          }.sortBy(_.time).toList
        )
      } catch {
@@ -288,7 +293,7 @@ object JGitUtil {
      @tailrec
      def findLastCommits(result:List[(ObjectId, FileMode, String, String, Option[String], RevCommit)],
                          restList:List[((ObjectId, FileMode, String, String, Option[String]), Map[RevCommit, RevCommit])],
-                          revIterator:java.util.Iterator[RevCommit]): List[(ObjectId, FileMode, String, String, Option[String], RevCommit)] ={
+                          revIterator:java.util.Iterator[RevCommit]): List[(ObjectId, FileMode, String, String, Option[String], RevCommit)] = {
        if(restList.isEmpty){
          result
        } else if(!revIterator.hasNext){ // maybe, revCommit has only 1 log. other case, restList be empty
@@ -359,9 +364,9 @@ object JGitUtil {
          (file1.isDirectory, file2.isDirectory) match {
            case (true , false) => true
            case (false, true ) => false
-           case _ => file1.name.compareTo(file2.name) < 0
+            case _ => file1.name.compareTo(file2.name) < 0
          }
-        }.toList
+        }
    }
  }

@@ -369,7 +374,7 @@ object JGitUtil {
   * Returns the first line of the commit message.
   */
  private def getSummaryMessage(fullMessage: String, shortMessage: String): String = {
-    defining(fullMessage.trim.indexOf("\n")){ i =>
+    defining(fullMessage.trim.indexOf('\n')){ i =>
      defining(if(i >= 0) fullMessage.trim.substring(0, i).trim else fullMessage){ firstLine =>
        if(firstLine.length > shortMessage.length) shortMessage else firstLine
      }
@@ -994,13 +999,13 @@ object JGitUtil {

  def getBlame(git: Git, id: String, path: String): Iterable[BlameInfo] = {
    Option(git.getRepository.resolve(id)).map{ commitId =>
-      val blamer = new org.eclipse.jgit.api.BlameCommand(git.getRepository);
+      val blamer = new org.eclipse.jgit.api.BlameCommand(git.getRepository)
      blamer.setStartCommit(commitId)
      blamer.setFilePath(path)
      val blame = blamer.call()
      var blameMap = Map[String, JGitUtil.BlameInfo]()
      var idLine = List[(String, Int)]()
-      val commits = 0.to(blame.getResultContents().size()-1).map{ i =>
+      val commits = 0.to(blame.getResultContents().size() - 1).map{ i =>
        val c = blame.getSourceCommit(i)
        if(!blameMap.contains(c.name)){
          blameMap += c.name -> JGitUtil.BlameInfo(
@@ -1010,7 +1015,7 @@ object JGitUtil {
            c.getAuthorIdent.getWhen,
            Option(git.log.add(c).addPath(blame.getSourcePath(i)).setSkip(1).setMaxCount(2).call.iterator.next)
              .map(_.name),
-            if(blame.getSourcePath(i)==path){ None }else{ Some(blame.getSourcePath(i)) },
+            if(blame.getSourcePath(i)==path){ None } else { Some(blame.getSourcePath(i)) },
            c.getCommitterIdent.getWhen,
            c.getShortMessage,
            Set.empty)
--- a/src/main/scala/gitbucket/core/util/Notifier.scala
+++ b/src/main/scala/gitbucket/core/util/Notifier.scala
@@ -1,10 +1,9 @@
 package gitbucket.core.util

-import gitbucket.core.model.{Session, Issue, Account}
+import gitbucket.core.model.{Session, Account}
 import gitbucket.core.model.Profile.profile.blockingApi._
-import gitbucket.core.service.{RepositoryService, AccountService, IssuesService, SystemSettingsService}
+import gitbucket.core.service.SystemSettingsService
 import gitbucket.core.servlet.Database
-import gitbucket.core.view.Markdown

 import scala.concurrent._
 import scala.util.{Success, Failure}
@@ -13,87 +12,38 @@ import org.apache.commons.mail.{DefaultAuthenticator, HtmlEmail}
 import org.slf4j.LoggerFactory
 import gitbucket.core.controller.Context
 import SystemSettingsService.Smtp
-import SyntaxSugars.defining

-trait Notifier extends RepositoryService with AccountService with IssuesService {
+/**
+ * The trait for notifications.
+ * This is used by notifications plugin, which provides notifications feature on GitBucket.
+ * Please see the plugin for details.
+ */
+trait Notifier {

-  def toNotify(r: RepositoryService.RepositoryInfo, issue: Issue, content: String)
-      (msg: String => String)(implicit context: Context): Unit
+  def toNotify(subject: String, msg: String)
+              (recipients: Account => Session => Seq[String])(implicit context: Context): Unit

-  protected def recipients(issue: Issue, loginAccount: Account)(notify: String => Unit)(implicit session: Session) =
-    (
-        // individual repository's owner
-        issue.userName ::
-        // group members of group repository
-        getGroupMembers(issue.userName).map(_.userName) :::
-        // collaborators
-        getCollaboratorUserNames(issue.userName, issue.repositoryName) :::
-        // participants
-        issue.openedUserName ::
-        getComments(issue.userName, issue.repositoryName, issue.issueId).map(_.commentedUserName)
-    )
-    .distinct
-    .withFilter ( _ != loginAccount.userName )  // the operation in person is excluded
-    .foreach (
-      getAccountByUserName(_)
-        .filterNot (_.isGroupAccount)
-        .filterNot (LDAPUtil.isDummyMailAddress(_))
-        .foreach (x => notify(x.mailAddress))
-    )
 }

 object Notifier {
-  // TODO We want to be able to switch to mock.
  def apply(): Notifier = new SystemSettingsService {}.loadSystemSettings match {
    case settings if (settings.notification && settings.useSMTP) => new Mailer(settings.smtp.get)
    case _ => new MockMailer
  }
-
-  def msgIssue(url: String) = (content: String) => s"""
-    |${content}<br/>
-    |--<br/>
-    |<a href="${url}">View it on GitBucket</a>
-    """.stripMargin
-
-  def msgPullRequest(url: String) = (content: String) => s"""
-    |${content}<hr/>
-    |View, comment on, or merge it at:<br/>
-    |<a href="${url}">${url}</a>
-    """.stripMargin
-
-  def msgComment(url: String) = (content: String) => s"""
-    |${content}<br/>
-    |--<br/>
-    |<a href="${url}">View it on GitBucket</a>
-    """.stripMargin
-
-  def msgStatus(url: String) = (content: String) => s"""
-    |${content} <a href="${url}">#${url split('/') last}</a>
-    """.stripMargin
 }

 class Mailer(private val smtp: Smtp) extends Notifier {
  private val logger = LoggerFactory.getLogger(classOf[Mailer])

-  def toNotify(r: RepositoryService.RepositoryInfo, issue: Issue, content: String)
-      (msg: String => String)(implicit context: Context): Unit = {
+  def toNotify(subject: String, msg: String)
+              (recipients: Account => Session => Seq[String])(implicit context: Context): Unit = {
    context.loginAccount.foreach { loginAccount =>
      val database = Database()

      val f = Future {
-        database withSession { implicit session =>
-          defining(
-            s"[${r.owner}/${r.name}] ${issue.title} (#${issue.issueId})" ->
-              msg(Markdown.toHtml(
-                markdown         = content,
-                repository       = r,
-                enableWikiLink   = false,
-                enableRefsLink   = true,
-                enableAnchor     = false,
-                enableLineBreaks = false
-              ))
-          ) { case (subject, msg) =>
-            recipients(issue, loginAccount) { to => send(to, subject, msg, loginAccount) }
+        database withSession { session =>
+          recipients(loginAccount)(session) foreach { to =>
+            send(to, subject, msg, loginAccount)
          }
        }
        "Notifications Successful."
@@ -137,6 +87,6 @@ class Mailer(private val smtp: Smtp) extends Notifier {

 }
 class MockMailer extends Notifier {
-  def toNotify(r: RepositoryService.RepositoryInfo, issue: Issue, content: String)
-      (msg: String => String)(implicit context: Context): Unit = {}
+  def toNotify(subject: String, msg: String)
+              (recipients: Account => Session => Seq[String])(implicit context: Context): Unit = ()
 }
--- a/src/main/scala/gitbucket/core/util/RepositoryName.scala
+++ b/src/main/scala/gitbucket/core/util/RepositoryName.scala
@@ -1,7 +1,7 @@
 package gitbucket.core.util

 // TODO Move to gitbucket.core.api package?
-case class RepositoryName(owner:String, name:String){
+case class RepositoryName(owner: String, name: String){
  val fullName = s"${owner}/${name}"
 }

--- a/src/main/scala/gitbucket/core/util/StringUtil.scala
+++ b/src/main/scala/gitbucket/core/util/StringUtil.scala
@@ -136,6 +136,4 @@ object StringUtil {
 //    }
 //    b.toString
 //  }
-
-
 }
--- a/src/main/scala/gitbucket/core/util/Validations.scala
+++ b/src/main/scala/gitbucket/core/util/Validations.scala
@@ -19,6 +19,19 @@ trait Validations {
      }
  }

+  /**
+   * Constraint for the password.
+   */
+  def password: Constraint = new Constraint(){
+    override def validate(name: String, value: String, messages: Messages): Option[String] =
+      if(System.getProperty("gitbucket.validate.password") != "false" && !value.matches("[a-zA-Z0-9\\-_.]+")){
+        Some(s"${name} contains invalid character.")
+      } else {
+        None
+      }
+  }
+
+
  /**
   * Constraint for the repository identifier.
   */
--- a/src/main/scala/gitbucket/core/view/Markdown.scala
+++ b/src/main/scala/gitbucket/core/view/Markdown.scala
@@ -38,7 +38,6 @@ object Markdown {
    val source = if(enableTaskList) escapeTaskList(markdown) else markdown

    val options = new Options()
-    options.setSanitize(true)
    options.setBreaks(enableLineBreaks)

    val renderer = new GitBucketMarkedRenderer(options, repository,
--- a/src/main/scala/gitbucket/core/view/helpers.scala
+++ b/src/main/scala/gitbucket/core/view/helpers.scala
@@ -128,7 +128,7 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
                   repository: RepositoryService.RepositoryInfo,
                   enableWikiLink: Boolean, enableRefsLink: Boolean, enableAnchor: Boolean)(implicit context: Context): Html = {

-    val fileName  = filePath.reverse.head.toLowerCase
+    val fileName  = filePath.last.toLowerCase
    val extension = FileUtil.getExtension(fileName)
    val renderer  = PluginRegistry().getRenderer(extension)
    renderer.render(RenderRequest(filePath, fileContent, branch, repository, enableWikiLink, enableRefsLink, enableAnchor, context))
--- a/src/main/twirl/gitbucket/core/account/application.scala.html
+++ b/src/main/twirl/gitbucket/core/account/application.scala.html
@@ -2,8 +2,7 @@
  personalTokens: List[gitbucket.core.model.AccessToken],
  gneratedToken: Option[(gitbucket.core.model.AccessToken, String)])(implicit context: gitbucket.core.controller.Context)
@gitbucket.core.html.main("Applications"){
-<div class="container body">
-  @gitbucket.core.account.html.menu("application", context.settings.ssh){
+  @gitbucket.core.account.html.menu("application", context.loginAccount.get.userName, false){
    <div class="panel panel-default">
      <div class="panel-heading strong">Personal access tokens</div>
      <div class="panel-body">
@@ -49,5 +48,4 @@
      </div>
    </form>
  }
-</div>
 }
--- a/src/main/twirl/gitbucket/core/account/creategroup.scala.html
+++ b/src/main/twirl/gitbucket/core/account/creategroup.scala.html
@@ -0,0 +1,14 @@
+@(members: List[gitbucket.core.model.GroupMember])(implicit context: gitbucket.core.controller.Context)
+@gitbucket.core.html.main("Create group"){
+  <div class="content-wrapper main-center">
+    <div class="content body">
+      <h2>Create group</h2>
+      <form id="form" method="post" action="@context.path/groups/new" validate="true">
+        @gitbucket.core.account.html.groupform(None, members, false)
+        <fieldset class="border-top">
+          <input type="submit" class="btn btn-success" value="Create group"/>
+        </fieldset>
+      </form>
+    </div>
+  </div>
+}
--- a/src/main/twirl/gitbucket/core/account/edit.scala.html
+++ b/src/main/twirl/gitbucket/core/account/edit.scala.html
@@ -2,8 +2,7 @@
@import gitbucket.core.util.LDAPUtil
@import gitbucket.core.view.helpers
@gitbucket.core.html.main("Edit your profile"){
-<div class="container body">
-  @gitbucket.core.account.html.menu("profile", context.settings.ssh){
+  @gitbucket.core.account.html.menu("profile", context.loginAccount.get.userName, false){
    @gitbucket.core.helper.html.information(info)
    @gitbucket.core.helper.html.error(error)
    @if(LDAPUtil.isDummyMailAddress(account)){<div class="alert alert-danger">Please register your mail address.</div>}
@@ -61,7 +60,6 @@
      </div>
    </form>
  }
-</div>
 }
 <script>
 $(function(){
--- a/src/main/twirl/gitbucket/core/account/editgroup.scala.html
+++ b/src/main/twirl/gitbucket/core/account/editgroup.scala.html
@@ -0,0 +1,19 @@
+@(account: gitbucket.core.model.Account,
+  members: List[gitbucket.core.model.GroupMember],
+  info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
+@gitbucket.core.html.main("Edit group"){
+  @gitbucket.core.account.html.menu("profile", account.userName, true){
+    @gitbucket.core.helper.html.information(info)
+    <h2>Edit group</h2>
+    <form id="form" method="post" action="@context.path/@account.userName/_editgroup" validate="true">
+      @gitbucket.core.account.html.groupform(Some(account), members, false)
+      <fieldset class="border-top">
+        <div class="pull-right">
+          <a href="@helpers.url(account.userName)/_deletegroup" id="delete" class="btn btn-danger">Delete group</a>
+        </div>
+        <input type="submit" class="btn btn-success" value="Update group"/>
+      </fieldset>
+    </form>
+  }
+}
--- a/src/main/twirl/gitbucket/core/account/edithook.scala.html
+++ b/src/main/twirl/gitbucket/core/account/edithook.scala.html
@@ -0,0 +1,16 @@
+@(webHook: gitbucket.core.model.AccountWebHook,
+  events: Set[gitbucket.core.model.WebHook.Event],
+  account: gitbucket.core.model.Account,
+  create: Boolean)(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
+@gitbucket.core.html.main("Service Hooks"){
+  @gitbucket.core.account.html.menu("hooks", account.userName, account.isGroupAccount){
+    @gitbucket.core.settings.html.edithookform(
+      webHook, events, create,
+      helpers.url(account.userName) + "/_hooks/new",
+      helpers.url(account.userName) + "/_hooks/edit",
+      helpers.url(account.userName) + "/_hooks/delete",
+      helpers.url(account.userName) + "/_hooks/test"
+    )
+  }
+}
--- a/src/main/twirl/gitbucket/core/account/group.scala.html
+++ b/src/main/twirl/gitbucket/core/account/group.scala.html
@@ -1,145 +0,0 @@
-@(account: Option[gitbucket.core.model.Account], members: List[gitbucket.core.model.GroupMember])(implicit context: gitbucket.core.controller.Context)
-@import gitbucket.core.view.helpers
-@gitbucket.core.html.main(if(account.isEmpty) "Create group" else "Edit group"){
-<div class="content-wrapper main-center">
-  <div class="content body">
-    <h2>@{if(account.isEmpty) "Create group" else "Edit group"}</h2>
-    <form id="form" method="post" action="@if(account.isEmpty){@context.path/groups/new} else {@context.path/@account.get.userName/_editgroup}" validate="true">
-      <div class="row">
-        <div class="col-md-5">
-          <fieldset class="form-group">
-            <label for="groupName" class="strong">Group name</label>
-            <div>
-              <span id="error-groupName" class="error"></span>
-            </div>
-            <input type="text" name="groupName" id="groupName" class="form-control" value="@account.map(_.userName)"@if(account.isDefined){ readonly}/>
-          </fieldset>
-          <fieldset class="form-group">
-            <label class="strong">URL (Optional)</label>
-            <div>
-              <span id="error-url" class="error"></span>
-            </div>
-            <input type="text" name="url" id="url" class="form-control" value="@account.map(_.url)"/>
-          </fieldset>
-          <fieldset class="form-group">
-            <label for="groupDescription" class="strong">Description (Optional)</label>
-            <div>
-              <textarea name="description" id="description" class="form-control">@account.map(_.description)</textarea>
-            </div>
-          </fieldset>
-          <fieldset class="form-group">
-            <label for="avatar" class="strong">Image (Optional)</label>
-            @gitbucket.core.helper.html.uploadavatar(account)
-          </fieldset>
-        </div>
-        <div class="col-md-7">
-          <fieldset class="form-group">
-            <label class="strong">Members</label>
-            <ul id="member-list" class="collaborator">
-            </ul>
-            @gitbucket.core.helper.html.account("memberName", 200, true, false)
-            <input type="button" class="btn btn-default" value="Add" id="addMember"/>
-            <input type="hidden" id="members" name="members" value="@members.map(member => member.userName + ":" + member.isManager).mkString(",")"/>
-            <div>
-              <span class="error" id="error-members"></span>
-            </div>
-          </fieldset>
-        </div>
-      </div>
-      <fieldset class="border-top">
-        @if(account.isDefined){
-          <div class="pull-right">
-            <a href="@helpers.url(account.get.userName)/_deletegroup" id="delete" class="btn btn-danger">Delete group</a>
-          </div>
-        }
-        <input type="submit" class="btn btn-success" value="@if(account.isEmpty){Create group} else {Update group}"/>
-        @if(account.isDefined){
-          <a href="@helpers.url(account.get.userName)" class="btn btn-default">Cancel</a>
-        }
-      </fieldset>
-    </form>
-  </div>
-</div>
-}
-<script>
-$(function(){
-  $('input[type=submit]').click(function(){
-    updateMembers();
-  });
-
-  $('#addMember').click(function(){
-    $('#error-members').text('');
-    var userName = $('#memberName').val();
-
-    // check empty
-    if($.trim(userName) == ''){
-      return false;
-    }
-
-    // check duplication
-    var exists = $('#member-list li').filter(function(){
-      return $(this).data('name') == userName;
-    }).length > 0;
-    if(exists){
-      $('#error-members').text('User has been already added.');
-      return false;
-    }
-
-    // check existence
-    $.post('@context.path/_user/existence', { 'userName': userName },
-      function(data, status){
-        if(data == 'user'){
-          addMemberHTML(userName, false);
-        } else {
-          $('#error-members').text('User does not exist.');
-        }
-      });
-  });
-
-  $(document).on('click', '.remove', function(){
-    $(this).parent().remove();
-  });
-
-  // Don't submit form by ENTER key
-  $('#memberName').keypress(function(e){
-    return !(e.keyCode == 13);
-  });
-
-  $('#delete').click(function(){
-    return confirm('Once you delete this group, there is no going back.\nAre you sure?');
-  });
-
-  @members.map { member =>
-    addMemberHTML('@member.userName', @member.isManager);
-  }
-
-  function addMemberHTML(userName, isManager){
-    var memberButton = $('<label class="btn btn-default btn-mini"><input type="radio" value="false" name="' + userName + '">Member</label>');
-    if(!isManager){
-      memberButton.addClass('active');
-    }
-    var managerButton = $('<label class="btn btn-default btn-mini"><input type="radio" value="true" name="' + userName + '">Manager</label>');
-    if(isManager){
-      managerButton.addClass('active');
-    }
-
-    $('#member-list').append($('<li>')
-      .data('name', userName)
-      .append($('<div class="btn-group is_manager" data-toggle="buttons">')
-        .append(memberButton)
-        .append(managerButton))
-      .append(' ')
-      .append($('<a>').attr('href', '@context.path/' + userName).text(userName))
-      .append(' ')
-      .append($('<a href="#" class="remove pull-right">(remove)</a>')));
-  }
-
-  function updateMembers(){
-    var members = $('#member-list li').map(function(i, e){
-      var userName = $(e).data('name');
-      return userName + ':' + $(e).find('label.active input[type=radio]').attr('value');
-    }).get().join(',');
-    $('#members').val(members);
-  }
-});
-</script>
--- a/src/main/twirl/gitbucket/core/account/groupform.scala.html
+++ b/src/main/twirl/gitbucket/core/account/groupform.scala.html
@@ -0,0 +1,132 @@
+@(account: Option[gitbucket.core.model.Account],
+  members: List[gitbucket.core.model.GroupMember],
+  admin: Boolean)(implicit context: gitbucket.core.controller.Context)
+<div class="row">
+  <div class="col-md-5">
+    <fieldset class="form-group">
+      <label for="groupName" class="strong">Group name</label>
+      <div>
+        <span id="error-groupName" class="error"></span>
+      </div>
+      <input type="text" name="groupName" id="groupName" class="form-control" value="@account.map(_.userName)"@if(account.isDefined){ readonly}/>
+      @if(account.isDefined && admin){
+        <label for="removed">
+          <input type="checkbox" name="removed" id="removed" value="true" @if(account.get.isRemoved){checked}/>
+          Disable
+        </label>
+      }
+    </fieldset>
+    <fieldset class="form-group">
+      <label class="strong">URL (Optional)</label>
+      <div>
+        <span id="error-url" class="error"></span>
+      </div>
+      <input type="text" name="url" id="url" class="form-control" value="@account.map(_.url)"/>
+    </fieldset>
+    <fieldset class="form-group">
+      <label for="groupDescription" class="strong">Description (Optional)</label>
+      <div>
+        <textarea name="description" id="description" class="form-control">@account.map(_.description)</textarea>
+      </div>
+    </fieldset>
+    <fieldset class="form-group">
+      <label for="avatar" class="strong">Image (Optional)</label>
+      @gitbucket.core.helper.html.uploadavatar(account)
+    </fieldset>
+  </div>
+  <div class="col-md-7">
+    <fieldset class="form-group">
+      <label class="strong">Members</label>
+      <ul id="member-list" class="collaborator">
+      </ul>
+      @gitbucket.core.helper.html.account("memberName", 200, true, false)
+      <input type="button" class="btn btn-default" value="Add" id="addMember"/>
+      <input type="hidden" id="members" name="members" value="@members.map(member => member.userName + ":" + member.isManager).mkString(",")"/>
+      <div>
+        <span class="error" id="error-members"></span>
+      </div>
+    </fieldset>
+  </div>
+</div>
+<script>
+$(function(){
+  $('input[type=submit]').click(function(){
+    updateMembers();
+  });
+
+  $('#addMember').click(function(){
+    $('#error-members').text('');
+    var userName = $('#memberName').val();
+
+    // check empty
+    if($.trim(userName) == ''){
+      return false;
+    }
+
+    // check duplication
+    var exists = $('#member-list li').filter(function(){
+      return $(this).data('name') == userName;
+    }).length > 0;
+    if(exists){
+      $('#error-members').text('User has been already added.');
+      return false;
+    }
+
+    // check existence
+    $.post('@context.path/_user/existence', { 'userName': userName },
+      function(data, status){
+        if(data == 'user'){
+          addMemberHTML(userName, false);
+        } else {
+          $('#error-members').text('User does not exist.');
+        }
+      });
+  });
+
+  $(document).on('click', '.remove', function(){
+    $(this).parent().remove();
+  });
+
+  // Don't submit form by ENTER key
+  $('#memberName').keypress(function(e){
+    return !(e.keyCode == 13);
+  });
+
+  $('#delete').click(function(){
+    return confirm('Once you delete this group, there is no going back.\nAre you sure?');
+  });
+
+  @members.map { member =>
+    addMemberHTML('@member.userName', @member.isManager);
+  }
+
+  function addMemberHTML(userName, isManager){
+    var memberButton = $('<label class="btn btn-default btn-mini"><input type="radio" value="false" name="' + userName + '">Member</label>');
+    if(!isManager){
+      memberButton.addClass('active');
+    }
+    var managerButton = $('<label class="btn btn-default btn-mini"><input type="radio" value="true" name="' + userName + '">Manager</label>');
+    if(isManager){
+      managerButton.addClass('active');
+    }
+
+    $('#member-list').append($('<li>')
+      .data('name', userName)
+      .append($('<div class="btn-group is_manager" data-toggle="buttons">')
+        .append(memberButton)
+        .append(managerButton))
+      .append(' ')
+      .append($('<a>').attr('href', '@context.path/' + userName).text(userName))
+      .append(' ')
+      .append($('<a href="#" class="remove pull-right">(remove)</a>')));
+  }
+
+  function updateMembers(){
+    var members = $('#member-list li').map(function(i, e){
+      var userName = $(e).data('name');
+      return userName + ':' + $(e).find('label.active input[type=radio]').attr('value');
+    }).get().join(',');
+    $('#members').val(members);
+  }
+});
+</script>
--- a/src/main/twirl/gitbucket/core/account/hooks.scala.html
+++ b/src/main/twirl/gitbucket/core/account/hooks.scala.html
@@ -0,0 +1,42 @@
+@(account: gitbucket.core.model.Account,
+  webHooks: List[(gitbucket.core.model.AccountWebHook, Set[gitbucket.core.model.WebHook.Event])],
+  info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
+@gitbucket.core.html.main("Service Hooks"){
+  @gitbucket.core.account.html.menu("hooks", account.userName, account.isGroupAccount){
+    @gitbucket.core.helper.html.information(info)
+    <div class="panel panel-default">
+      <div class="panel-heading strong">
+        Webhooks
+      </div>
+      <div class="panel-body">
+        <p>
+          Webhooks allow external services to be notified when certain events happen within your repository.
+          When the specified events happen, we’ll send a POST request to each of the URLs you provide.
+          Learn more in <a href="https://github.com/takezoe/gitbucket/wiki/API-WebHook" target="_blank">GitBucket Wiki Webhook Page</a>.
+        </p>
+        <a href="@helpers.url(account.userName)/_hooks/new" class="btn btn-success pull-right" style="margin-bottom: 10px;">Add webhook</a>
+
+        <table class="table table-condensed" style="margin-bottom:0px;">
+          @webHooks.map { case (webHook, events) =>
+          <tr><td style="vertical-align: middle;">
+            <a href="@helpers.url(account.userName)/_hooks/edit?url=@helpers.urlEncode(webHook.url)" class="css-truncate" style="max-width:360px">
+              <span class="css-truncate-target">@webHook.url</span>
+            </a>
+            <em class="css-truncate" style="max-width: 225px;">(<span class="css-truncate-target">@events.map(_.name).mkString(", ")</span>)</em>
+          </td><td>
+            <div class="btn-group pull-right">
+              <a href="@helpers.url(account.userName)/_hooks/edit?url=@helpers.urlEncode(webHook.url)" class="btn btn-default">
+                <span class="octicon octicon-pencil"></span>
+              </a>
+              <a href="@helpers.url(account.userName)/_hooks/delete?url=@helpers.urlEncode(webHook.url)" class="btn btn-danger" onclick="return confirm('delete webhook for @webHook.url ?')">
+                <span class="octicon octicon-x"></span>
+              </a>
+            </div>
+          </td></tr>
+          }
+        </table>
+      </div>
+    </div>
+  }
+}
--- a/src/main/twirl/gitbucket/core/account/main.scala.html
+++ b/src/main/twirl/gitbucket/core/account/main.scala.html
@@ -43,6 +43,9 @@
        } else {
          <li@if(active == "activity"){ class="active"}><a href="@helpers.url(account.userName)?tab=activity">Public activity</a></li>
        }
+        @*
+        <li@if(active == "webhooks"){ class="active"}><a href="@helpers.url(account.userName)?tab=webhooks">Webhooks</a></li>
+        *@
        @gitbucket.core.plugin.PluginRegistry().getProfileTabs.map { tab =>
          @tab(account, context).map { link =>
            <li@if(active == link.id){ class="active"}><a href="@context.path/@link.path">@link.label</a></li>
--- a/src/main/twirl/gitbucket/core/account/menu.scala.html
+++ b/src/main/twirl/gitbucket/core/account/menu.scala.html
@@ -1,24 +1,50 @@
-@(active: String, ssh: Boolean)(body: Html)(implicit context: gitbucket.core.controller.Context)
+@(active: String, userName: String, group: Boolean)(body: Html)(implicit context: gitbucket.core.controller.Context)
 <div class="main-sidebar">
  <div class="sidebar">
    <ul class="sidebar-menu">
-      <li@if(active=="profile"){ class="active"}>
-        <a href="@context.path/@context.loginAccount.get.userName/_edit">Profile</a>
-      </li>
-      @if(ssh){
-      <li@if(active=="ssh"){ class="active"}>
-        <a href="@context.path/@context.loginAccount.get.userName/_ssh">SSH Keys</a>
-      </li>
-      }
-      <li@if(active=="application"){ class="active"}>
-        <a href="@context.path/@context.loginAccount.get.userName/_application">Applications</a>
-      </li>
-      @gitbucket.core.plugin.PluginRegistry().getAccountSettingMenus.map { menu =>
-        @menu(context).map { link =>
-          <li@if(active==link.id){ class="active"}>
-            <a href="@context.path/@link.path">@link.label</a>
+      @if(group){
+        <li class="menu-item-hover @if(active=="profile"){active}">
+          <a href="@context.path/@userName/_editgroup">
+            <i class="menu-icon octicon octicon-person"></i> <span>Profile</span>
+          </a>
+        </li>
+        <li class="menu-item-hover @if(active=="hooks"){active}">
+          <a href="@context.path/@userName/_hooks">
+            <i class="menu-icon octicon octicon-zap"></i> <span>Service Hooks</span>
+          </a>
+        </li>
+      } else {
+        <li class="menu-item-hover @if(active=="profile"){active}">
+          <a href="@context.path/@userName/_edit">
+            <i class="menu-icon octicon octicon-person"></i> <span>Profile</span>
+          </a>
+        </li>
+        @if(context.settings.ssh){
+          <li class="menu-item-hover @if(active=="ssh"){active}">
+            <a href="@context.path/@userName/_ssh">
+              <i class="menu-icon octicon octicon-key"></i> <span>SSH Keys</span>
+            </a>
          </li>
        }
+        <li class="menu-item-hover @if(active=="application"){active}">
+          <a href="@context.path/@userName/_application">
+            <i class="menu-icon octicon octicon-rocket"></i> <span>Applications</span>
+          </a>
+        </li>
+        <li class="menu-item-hover @if(active=="hooks"){active}">
+          <a href="@context.path/@userName/_hooks">
+            <i class="menu-icon octicon octicon-zap"></i> <span>Service Hooks</span>
+          </a>
+        </li>
+        @gitbucket.core.plugin.PluginRegistry().getAccountSettingMenus.map { menu =>
+          @menu(context).map { link =>
+            <li class="menu-item-hover @if(active==link.id){active}">
+              <a href="@context.path/@link.path">
+                <i class="menu-icon octicon octicon-plug"></i> <span>@link.label</span>
+              </a>
+            </li>
+          }
+        }
      }
    </ul>
  </div>
--- a/src/main/twirl/gitbucket/core/account/ssh.scala.html
+++ b/src/main/twirl/gitbucket/core/account/ssh.scala.html
@@ -1,8 +1,7 @@
@(account: gitbucket.core.model.Account, sshKeys: List[gitbucket.core.model.SshKey])(implicit context: gitbucket.core.controller.Context)
@import gitbucket.core.ssh.SshUtil
@gitbucket.core.html.main("SSH Keys"){
-<div class="container body">
-  @gitbucket.core.account.html.menu("ssh", context.settings.ssh){
+  @gitbucket.core.account.html.menu("ssh", context.loginAccount.get.userName, false){
    <div class="panel panel-default">
      <div class="panel-heading strong">SSH Keys</div>
      <div class="panel-body">
@@ -37,5 +36,4 @@
      </div>
    </form>
  }
-</div>
 }
--- a/src/main/twirl/gitbucket/core/admin/menu.scala.html
+++ b/src/main/twirl/gitbucket/core/admin/menu.scala.html
@@ -2,25 +2,42 @@
 <div class="main-sidebar">
  <div class="sidebar">
    <ul class="sidebar-menu" id="system-admin-menu-container">
-      <li@if(active=="users"){ class="active"}>
-        <a href="@context.path/admin/users">User management</a>
+      <li class="menu-item-hover @if(active=="users"){active}">
+        <a href="@context.path/admin/users">
+          <i class="menu-icon octicon octicon-person"></i>
+          <span>User management</span>
+        </a>
      </li>
-      <li@if(active=="system"){ class="active"}>
-        <a href="@context.path/admin/system">System settings</a>
+      <li class="menu-item-hover @if(active=="system"){active}">
+        <a href="@context.path/admin/system">
+          <i class="menu-icon octicon octicon-gear"></i>
+          <span>System settings</span></a>
      </li>
-      <li@if(active=="plugins"){ class="active"}>
-        <a href="@context.path/admin/plugins">Plugins</a>
+      <li class="menu-item-hover @if(active=="plugins"){active}">
+        <a href="@context.path/admin/plugins">
+          <i class="menu-icon octicon octicon-plug"></i>
+          <span>Plugins</span>
+        </a>
      </li>
-      <li@if(active=="data"){ class="active"}>
-        <a href="@context.path/admin/data">Data export / import</a>
+      <li class="menu-item-hover @if(active=="data"){active}">
+        <a href="@context.path/admin/data">
+          <i class="menu-icon octicon octicon-database"></i>
+          <span>Data export / import</span>
+        </a>
      </li>
-      <li>
-        <a href="@context.path/console/login.jsp" target="_blank">H2 console</a>
+      <li class="menu-item-hover">
+        <a href="@context.path/console/login.jsp" target="_blank">
+          <i class="menu-icon octicon octicon-database"></i>
+          <span>H2 console</span>
+        </a>
      </li>
      @gitbucket.core.plugin.PluginRegistry().getSystemSettingMenus.map { menu =>
        @menu(context).map { link =>
          <li@if(active==link.id){ class="active"}>
-            <a href="@context.path/@link.path">@link.label</a>
+            <a href="@context.path/@link.path">
+              <i class="menu-icon octicon octicon-plug"></i>
+              <span>@link.label</span>
+            </a>
          </li>
        }
      }
--- a/src/main/twirl/gitbucket/core/admin/plugins.scala.html
+++ b/src/main/twirl/gitbucket/core/admin/plugins.scala.html
@@ -1,18 +1,32 @@
-@(plugins: List[gitbucket.core.plugin.PluginInfo])(implicit context: gitbucket.core.controller.Context)
+@(plugins: List[(gitbucket.core.plugin.PluginInfoBase, Boolean)], info: Option[Any])(implicit context: gitbucket.core.controller.Context)
@gitbucket.core.html.main("Plugins"){
  @gitbucket.core.admin.html.menu("plugins") {
-    <h1>Installed plugins</h1>
-
+    @gitbucket.core.helper.html.information(info)
+    <form action="@context.path/admin/plugins/_reload" method="POST" class="pull-right">
+      <input type="submit" value="Reload plugins" class="btn btn-default">
+    </form>
+    <h1>Plugins</h1>
    @if(plugins.size > 0) {
      <ul>
-      @plugins.map { plugin =>
+      @plugins.map { case (plugin, enabled) =>
        <li><a href="#@plugin.pluginId">@plugin.pluginId:@plugin.pluginVersion</a></li>
      }
      </ul>

-      @plugins.map { plugin =>
+      @plugins.map { case (plugin, enabled) =>
        <div class="panel panel-default">
-          <div class="panel-heading strong" id="@plugin.pluginId">@plugin.pluginName</div>
+          <div class="panel-heading strong" id="@plugin.pluginId">
+            @if(enabled){
+              <form action="@{context.path}/admin/plugins/@{plugin.pluginId}/@{plugin.pluginVersion}/_uninstall" method="POST" class="pull-right uninstall-form">
+                <input type="submit" value="Uninstall" class="btn btn-danger btn-sm" style="position: relative; top: -5px; left: 10px;" data-name="@plugin.pluginName">
+              </form>
+            } else {
+              <form action="@{context.path}/admin/plugins/@{plugin.pluginId}/@{plugin.pluginVersion}/_install" method="POST" class="pull-right install-form">
+                <input type="submit" value="Install" class="btn btn-success btn-sm" style="position: relative; top: -5px; left: 10px;" data-name="@plugin.pluginName">
+              </form>
+            }
+            @plugin.pluginName
+          </div>
          <div class="panel-body">
            <div class="row">
              <label class="col-md-2">Id</label>
@@ -38,3 +52,16 @@
    }
  }
 }
+<script>
+  $(function(){
+    $('.uninstall-form').click(function(e){
+      var name = $(e.target).data('name');
+      return confirm('Uninstall ' + name + '. Are you sure?');
+    });
+
+    $('.install-form').click(function(e){
+      var name = $(e.target).data('name');
+      return confirm('Install ' + name + '. Are you sure?');
+    });
+  });
+</script>
--- a/src/main/twirl/gitbucket/core/admin/usergroup.scala.html
+++ b/src/main/twirl/gitbucket/core/admin/usergroup.scala.html
@@ -1,134 +1,19 @@
@(account: Option[gitbucket.core.model.Account], members: List[gitbucket.core.model.GroupMember])(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
@gitbucket.core.html.main(if(account.isEmpty) "New group" else "Update group"){
  @gitbucket.core.admin.html.menu("users"){
-    <form method="POST" action="@if(account.isEmpty){@context.path/admin/users/_newgroup} else {@context.path/admin/users/@account.get.userName/_editgroup}" validate="true">
-      <div class="row">
-        <div class="col-md-6">
-          <fieldset class="form-group">
-            <label for="groupName" class="strong">Group name</label>
-            <div>
-              <span id="error-groupName" class="error"></span>
-            </div>
-            <input type="text" name="groupName" id="groupName" class="form-control" value="@account.map(_.userName)"@if(account.isDefined){ readonly}/>
-            @if(account.isDefined){
-              <label for="removed">
-                <input type="checkbox" name="removed" id="removed" value="true" @if(account.get.isRemoved){checked}/>
-                Disable
-              </label>
-            }
-          </fieldset>
-          <fieldset class="form-group">
-            <label class="strong">URL (Optional)</label>
-            <div>
-              <span id="error-url" class="error"></span>
-            </div>
-            <input type="text" name="url" id="url" class="form-control" value="@account.map(_.url)"/>
-          </fieldset>
-          <fieldset class="form-group">
-            <label class="strong">Description (Optional)</label>
-            <textarea name="description" id="description" class="form-control">@account.map(_.description)</textarea>
-          </fieldset>
-          <fieldset class="form-group">
-            <label for="avatar" class="strong">Image (Optional)</label>
-            @gitbucket.core.helper.html.uploadavatar(account)
-          </fieldset>
-        </div>
-        <div class="col-md-6">
-          <fieldset class="form-group">
-            <label class="strong">Members</label>
-            <ul id="member-list" class="collaborator">
-            </ul>
-            @gitbucket.core.helper.html.account("memberName", 200, true, false)
-            <input type="button" class="btn btn-default" value="Add" id="addMember"/>
-            <input type="hidden" id="members" name="members" value="@members.map(member => member.userName + ":" + member.isManager).mkString(",")"/>
-            <div>
-              <span class="error" id="error-members"></span>
-            </div>
-          </fieldset>
-        </div>
-      </div>
+    <form id="form" method="post" action="@context.path/admin/users/@(account.map(x => s"${x.userName}/_editgroup").getOrElse("_newgroup"))" validate="true">
+      @gitbucket.core.account.html.groupform(account, members, true
+      )
      <fieldset class="border-top">
+        @if(account.isDefined){
+          <div class="pull-right">
+            <a href="@helpers.url(account.get.userName)/_deletegroup" id="delete" class="btn btn-danger">Delete group</a>
+          </div>
+        }
        <input type="submit" class="btn btn-success" value="@if(account.isEmpty){Create group} else {Update group}"/>
        <a href="@context.path/admin/users" class="btn btn-default">Cancel</a>
      </fieldset>
    </form>
  }
 }
-<script>
-$(function(){
-  $('input[type=submit]').click(function(){
-    updateMembers();
-  });
-
-  $('#addMember').click(function(){
-    $('#error-members').text('');
-    var userName = $('#memberName').val();
-
-    // check empty
-    if($.trim(userName) == ''){
-      return false;
-    }
-
-    // check duplication
-    var exists = $('#member-list li').filter(function(){
-      return $(this).data('name') == userName;
-    }).length > 0;
-    if(exists){
-      $('#error-members').text('User has been already added.');
-      return false;
-    }
-
-    // check existence
-    $.post('@context.path/_user/existence', { 'userName': userName },
-      function(data, status){
-        if(data == 'user'){
-          addMemberHTML(userName, false);
-        } else {
-          $('#error-members').text('User does not exist.');
-        }
-      });
-  });
-
-  $(document).on('click', '.remove', function(){
-    $(this).parent().remove();
-  });
-
-  // Don't submit form by ENTER key
-  $('#memberName').keypress(function(e){
-    return !(e.keyCode == 13);
-  });
-
-  @members.map { member =>
-    addMemberHTML('@member.userName', @member.isManager);
-  }
-
-  function addMemberHTML(userName, isManager){
-    var memberButton = $('<label class="btn btn-default btn-mini"><input type="radio" value="false" name="' + userName + '">Member</label>');
-    if(!isManager){
-      memberButton.addClass('active');
-    }
-    var managerButton = $('<label class="btn btn-default btn-mini"><input type="radio" value="true" name="' + userName + '">Manager</label>');
-    if(isManager){
-      managerButton.addClass('active');
-    }
-
-    $('#member-list').append($('<li>')
-      .data('name', userName)
-      .append($('<div class="btn-group is_manager" data-toggle="buttons">')
-        .append(memberButton)
-        .append(managerButton))
-      .append(' ')
-      .append($('<a>').attr('href', '@context.path/' + userName).text(userName))
-      .append(' ')
-      .append($('<a href="#" class="remove pull-right">(remove)</a>')));
-  }
-
-  function updateMembers(){
-    var members = $('#member-list li').map(function(i, e){
-      var userName = $(e).data('name');
-      return userName + ':' + $(e).find('label.active input[type=radio]').attr('value');
-    }).get().join(',');
-    $('#members').val(members);
-  }
-});
-</script>
--- a/src/main/twirl/gitbucket/core/dashboard/header.scala.html
+++ b/src/main/twirl/gitbucket/core/dashboard/header.scala.html
@@ -18,7 +18,7 @@
      </a>
    </li>
  }
-  @gitbucket.core.helper.html.dropdown("Organization"){
+  @gitbucket.core.helper.html.dropdown("Organization", filter = ("organization", "Find Organization...")){
    @groups.map { group =>
      <li>
        <a href="@((if(condition.groups.contains(group)) condition.copy(groups = condition.groups - group) else condition.copy(groups = condition.groups + group)).toURL)">
@@ -60,4 +60,4 @@
      </a>
    </li>
  }
-</div>
+</div>
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`libraryDependencies += "com.eclipsesource.minimal-json" % "minimal-json" % "0.9.4"`