Merge branch 'master' into pr-add-account-webhook

2025-11-07 05:55:51 +01:00 · 2017-06-18 18:15:41 +09:00
parent 0eab5295db 8e732c68bc
commit 880c6ac554
125 changed files with 2849 additions and 1041 deletions
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -1,6 +1,7 @@
 # Guideline for Issues

- At first, See [FAQ](https://github.com/gitbucket/gitbucket/wiki/FAQ) and check issues whether there is a same question or request in the past.
+- 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 Japaneses other than English at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
+- 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.
--- 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
@@ -8,6 +8,7 @@ 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
@@ -16,3 +17,22 @@ cache:
    - $HOME/.coursier
    - $HOME/.embedmysql
    - $HOME/.embedpostgresql
+matrix:
+  include:
+  - dist: trusty
+    group: edge
+    sudo: required
+    jdk: oraclejdk9
+    script:
+    # https://github.com/sbt/sbt/pull/2951
+    - git clone https://github.com/retronym/java9-rt-export
+    - cd java9-rt-export/
+    - git checkout 1019a2873d057dd7214f4135e84283695728395d
+    - jdk_switcher use oraclejdk8
+    - sbt package
+    - jdk_switcher use oraclejdk9
+    - 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 $HOME/.sbt/0.13/java9-rt-ext/rt.jar | grep java/lang/Object
+    - cd ..
+    - wget https://raw.githubusercontent.com/paulp/sbt-extras/9ade5fa54914ca8aded44105bf4b9a60966f3ccd/sbt && chmod +x ./sbt
+    - ./sbt -Dscala.ext.dirs=$HOME/.sbt/0.13/java9-rt-ext test
--- a/5
+++ b/5
@@ -1,4 +1,3 @@
-
                                 Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/
@@ -179,7 +178,7 @@
   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
+      boilerplate notice, with the fields enclosed by brackets "{}"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
@@ -187,7 +186,7 @@
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

-   Copyright 2013-2016 GitBucket Team
+   Copyright {yyyy} {name of copyright owner}

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
--- a/README.md
+++ b/README.md
@@ -1,31 +1,35 @@
 GitBucket [![Gitter chat](https://badges.gitter.im/gitbucket/gitbucket.png)](https://gitter.im/gitbucket/gitbucket) [![Build Status](https://travis-ci.org/gitbucket/gitbucket.svg?branch=master)](https://travis-ci.org/gitbucket/gitbucket)
 =========

-GitBucket is a Git platform powered by Scala offering:
+GitBucket is a Git web platform powered by Scala offering:
+
 - Easy installation
+- Intuitive UI
 - High extensibility by plugins
 - API compatibility with GitHub

+You can try an [online demo](https://gitbucket.herokuapp.com/) *(ID: root / Pass: root)* of GitBucket, and also get the latest information at [GitBucket News](https://gitbucket.github.io/gitbucket-news/).
+
 Features
 --------
-The current version of GitBucket provides a basic features below:
+The current version of GitBucket provides many features such as:

- Public / Private Git repository (http and ssh access)
+- Public / Private Git repositories (with http/https and ssh access)
 - GitLFS support
- Repository viewer includes online file editor
- Issues, Pull request and Wiki for repositories
- Activity timeline and email notification
+- Repository viewer including an online file editor
+- Issues, Pull Requests and Wiki for repositories
+- Activity timeline and email notifications
 - Account and group management with LDAP integration
- Plug-in system
+- a Plug-in system

 If you want to try the development version of GitBucket, see the [Developer's Guide](https://github.com/gitbucket/gitbucket/blob/master/doc/how_to_run.md).

 Installation
 --------
-GitBucket requires **Java8**. You have to install it if it is not already installed.
+GitBucket requires **Java8**. You have to install it, if it is not already installed.

 1. Download the latest **gitbucket.war** from [the releases page](https://github.com/gitbucket/gitbucket/releases) and run it by `java -jar gitbucket.war`.
-2. Go to `http://[hostname]:8080/` and log in with **root** / **root**.
+2. Go to `http://[hostname]:8080/` and log in with ID: **root** / Pass: **root**.

 You can specify following options:

@@ -34,9 +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).
@@ -45,24 +52,42 @@ To upgrade GitBucket, replace `gitbucket.war` with the new version, after stoppi

 Plugins
 --------
-GitBucket has a plug-in system to allow extensions to GitBucket. We provide some official plug-ins:
+GitBucket has a plug-in system that allows extra functionality. Officially the following plug-ins are provided:

 - [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)

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

 Support
 --------

- If you have any questions about GitBucket, send it to the [gitter room](https://gitter.im/gitbucket/gitbucket) before opening an issue.
- Make sure check whether there is the same question or request in the past.
- When raise a new issue, write at least the subject in **English**.
- We can also provide support in Japanese at [gitter room for Japanese](https://gitter.im/gitbucket/gitbucket_ja).
- The first priority of GitBucket is easy installation and API compatibility with GitHub, so we might reject if your request is against it.
+- If you have any questions about GitBucket, 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 provide 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.

 Release Notes
 -------------
+### 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
+- Collaborators of the private forked repository are copied from the original repository
+- Cache avatar images in the browser
+- New extension point to receive events about repository
+
 ### 4.10 - 25 Feb 2017
 - Update to Scala 2.12, Scalatra 2.5 and Slick 3.2
 - Display file size in the file viewer
--- a/build.sbt
+++ b/build.sbt
@@ -1,8 +1,8 @@
 val Organization = "io.github.gitbucket"
 val Name = "gitbucket"
-val GitBucketVersion = "4.10.0"
+val GitBucketVersion = "4.13.0"
 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 := "2.12.1"
+scalaVersion := "2.12.2"

 // dependency settings
 resolvers ++= Seq(
@@ -21,30 +21,30 @@ resolvers ++= Seq(
  "amateras-snapshot" at "http://amateras.sourceforge.jp/mvn-snapshot/"
 )
 libraryDependencies ++= Seq(
-  "org.eclipse.jgit"                %  "org.eclipse.jgit.http.server" % "4.6.0.201612231935-r",
-  "org.eclipse.jgit"                %  "org.eclipse.jgit.archive"     % "4.6.0.201612231935-r",
+  "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.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"                      % "1.0.12",
+  "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",
+  "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"            % "0.0.8",
-  "joda-time"                       %  "joda-time"                    % "2.9.6",
+  "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",
+  "mysql"                           %  "mysql-connector-java"         % "6.0.6",
+  "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",
@@ -54,12 +54,13 @@ libraryDependencies ++= Seq(
  "javax.servlet"                   %  "javax.servlet-api"            % "3.1.0"          % "provided",
  "junit"                           %  "junit"                        % "4.12"           % "test",
  "org.scalatra"                    %% "scalatra-scalatest"           % ScalatraVersion  % "test",
+  "org.mockito"                     %  "mockito-core"                 % "2.7.22"         % "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"
 )

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

--- a/doc/how_to_run.md
+++ b/doc/how_to_run.md
@@ -1,18 +1,24 @@
 How to run from the source tree
 ========

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

-If you want to test GitBucket, input following command at the root directory of the source tree.
+If you want to test GitBucket, type the following command in the root directory of the source tree.

 ```
 $ sbt ~jetty:start
 ```

-Then access to `http://localhost:8080/` by your browser. The default administrator account is `root` and password is `root`.
+Then access `http://localhost:8080/` in your browser. The default administrator account is `root` and password is `root`.

-Source code modification is detected and reloaded automatically. You can modify logging configuration by editing `src/main/resources/logback-dev.xml`.
+Source code modifications are detected and a reloaded happens automatically. You can modify the logging configuration by editing `src/main/resources/logback-dev.xml`.

 Build war file
 --------
@@ -23,9 +29,9 @@ To build war file, run the following command:
 $ sbt package
 ```

-`gitbucket_2.11-x.x.x.war` is generated into `target/scala-2.11`.
+`gitbucket_2.12-x.x.x.war` is generated into `target/scala-2.12`.

-To build executable war file, run
+To build an executable war file, run

 ```
 $ sbt executable
@@ -35,8 +41,8 @@ at the top of the source tree. It generates executable `gitbucket.war` into `tar

 Run tests spec
 ---------
-To run the full serie of tests, run the following command:
+To run the full series of tests, run the following command:

 ```
-sbt test
+$ sbt test
 ```
--- a/doc/notification.md
+++ b/doc/notification.md
@@ -1,7 +1,7 @@
 Notification Email
 ========

-GitBucket sends email to target users by enabling the notification email by an administrator.
+GitBucket can send email notification to users if this feature is enabled by an administrator.

 The timing of the notification are as follows:

@@ -17,7 +17,8 @@ When the ```CLOSED``` column value is updated, GitBucket does the notification.
 Notified users are as follows:

 * individual repository's owner
+* group members of group repository
 * collaborators
 * participants

-However, the operation in person is excluded from the target.
+However, the person performing the operation is excluded from the notification.
--- 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/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.15
--- 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;
@@ -19,19 +26,28 @@ public class JettyLauncher {
            if(arg.startsWith("--") && arg.contains("=")) {
                String[] dim = arg.split("=");
                if(dim.length >= 2) {
-                    if(dim[0].equals("--host")) {
-                        host = dim[1];
-                    } else if(dim[0].equals("--port")) {
-                        port = Integer.parseInt(dim[1]);
-                    } else if(dim[0].equals("--prefix")) {
-                        contextPath = dim[1];
-                        if(!contextPath.startsWith("/")){
-                            contextPath = "/" + contextPath;
-                        }
-                    } else if(dim[0].equals("--gitbucket.home")){
-                        System.setProperty("gitbucket.home", dim[1]);
-                    } else if(dim[0].equals("--temp_dir")){
-                        tmpDirPath = dim[1];
+                    switch (dim[0]) {
+                        case "--host":
+                            host = dim[1];
+                            break;
+                        case "--port":
+                            port = Integer.parseInt(dim[1]);
+                            break;
+                        case "--prefix":
+                            contextPath = dim[1];
+                            if (!contextPath.startsWith("/")) {
+                                contextPath = "/" + contextPath;
+                            }
+                            break;
+                        case "--max_file_size":
+                            System.setProperty("gitbucket.maxFileSize", dim[2]);
+                            break;
+                        case "--gitbucket.home":
+                            System.setProperty("gitbucket.home", dim[1]);
+                            break;
+                        case "--temp_dir":
+                            tmpDirPath = dim[1];
+                            break;
                    }
                }
            }
@@ -54,6 +70,15 @@ 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;
@@ -74,6 +99,9 @@ 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();

@@ -85,7 +113,9 @@ 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();
@@ -114,4 +144,12 @@ public class JettyLauncher {
        }
        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 +1,22 @@
+<?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"/>
+</changeSet>
--- a/src/main/scala/ScalatraBootstrap.scala
+++ b/src/main/scala/ScalatraBootstrap.scala
@@ -44,6 +44,7 @@ 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 +31,12 @@ 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")
  )
 )
--- a/src/main/scala/gitbucket/core/api/ApiContents.scala
+++ b/src/main/scala/gitbucket/core/api/ApiContents.scala
@@ -1,8 +1,9 @@
 package gitbucket.core.api

+import java.util.Base64
+
 import gitbucket.core.util.JGitUtil.FileInfo
 import gitbucket.core.util.RepositoryName
-import org.apache.commons.codec.binary.Base64

 case class ApiContents(
  `type`: String,
@@ -20,7 +21,7 @@ object ApiContents{
      ApiContents("dir", fileInfo.name, fileInfo.path, fileInfo.commitId, None, None)(repositoryName)
    } else {
      content.map(arr =>
-        ApiContents("file", fileInfo.name, fileInfo.path, fileInfo.commitId, Some(Base64.encodeBase64String(arr)), Some("base64"))(repositoryName)
+        ApiContents("file", fileInfo.name, fileInfo.path, fileInfo.commitId, Some(Base64.getEncoder.encodeToString(arr)), Some("base64"))(repositoryName)
      ).getOrElse(ApiContents("file", fileInfo.name, fileInfo.path, fileInfo.commitId, None, None)(repositoryName))
    }
  }
--- 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,
--- a/src/main/scala/gitbucket/core/api/CreateAStatus.scala
+++ b/src/main/scala/gitbucket/core/api/CreateAStatus.scala
@@ -19,8 +19,8 @@ case class CreateAStatus(
  def isValid: Boolean = {
    CommitState.valueOf(state).isDefined &&
      // only http
-      target_url.filterNot(f => "\\Ahttps?://".r.findPrefixOf(f).isDefined && f.length<255).isEmpty &&
-      context.filterNot(f => f.length<255).isEmpty &&
-      description.filterNot(f => f.length<1000).isEmpty
+      target_url.forall(f => "\\Ahttps?://".r.findPrefixOf(f).isDefined && f.length < 255) &&
+      context.forall(f => f.length < 255) &&
+      description.forall(f => f.length < 1000)
  }
 }
--- a/src/main/scala/gitbucket/core/controller/AccountController.scala
+++ b/src/main/scala/gitbucket/core/controller/AccountController.scala
@@ -20,13 +20,13 @@ 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()))),
@@ -60,31 +60,31 @@ trait AccountControllerBase extends AccountManagementControllerBase {

  val sshKeyForm = mapping(
    "title"     -> trim(label("Title", text(required, maxlength(100)))),
-    "publicKey" -> trim(label("Key"  , text(required, validPublicKey)))
+    "publicKey" -> trim2(label("Key" , text(required, validPublicKey)))
  )(SshKeyForm.apply)

  val personalTokenForm = mapping(
-    "note"     -> trim(label("Token", text(required, maxlength(100))))
+    "note" -> trim(label("Token", text(required, maxlength(100))))
  )(PersonalTokenForm.apply)

  case class NewGroupForm(groupName: String, description: Option[String], url: Option[String], fileId: Option[String], members: String)
  case class EditGroupForm(groupName: String, description: Option[String], url: Option[String], fileId: Option[String], members: String, clearImage: Boolean)

  val newGroupForm = mapping(
-    "groupName" -> trim(label("Group name" ,text(required, maxlength(100), identifier, uniqueUserName, reservedNames))),
+    "groupName"   -> trim(label("Group name" ,text(required, maxlength(100), identifier, uniqueUserName, reservedNames))),
    "description" -> trim(label("Group description", optional(text()))),
-    "url"       -> trim(label("URL"        ,optional(text(maxlength(200))))),
-    "fileId"    -> trim(label("File ID"    ,optional(text()))),
-    "members"   -> trim(label("Members"    ,text(required, members)))
+    "url"         -> trim(label("URL"        ,optional(text(maxlength(200))))),
+    "fileId"      -> trim(label("File ID"    ,optional(text()))),
+    "members"     -> trim(label("Members"    ,text(required, members)))
  )(NewGroupForm.apply)

  val editGroupForm = mapping(
-    "groupName"  -> trim(label("Group name"  ,text(required, maxlength(100), identifier))),
+    "groupName"   -> trim(label("Group name"  ,text(required, maxlength(100), identifier))),
    "description" -> trim(label("Group description", optional(text()))),
-    "url"        -> trim(label("URL"         ,optional(text(maxlength(200))))),
-    "fileId"     -> trim(label("File ID"     ,optional(text()))),
-    "members"    -> trim(label("Members"     ,text(required, members))),
-    "clearImage" -> trim(label("Clear image" ,boolean()))
+    "url"         -> trim(label("URL"         ,optional(text(maxlength(200))))),
+    "fileId"      -> trim(label("File ID"     ,optional(text()))),
+    "members"     -> trim(label("Members"     ,text(required, members))),
+    "clearImage"  -> trim(label("Clear image" ,boolean()))
  )(EditGroupForm.apply)

  case class RepositoryCreationForm(owner: String, name: String, description: Option[String], isPrivate: Boolean, createReadme: Boolean)
@@ -197,10 +197,20 @@ trait AccountControllerBase extends AccountManagementControllerBase {

  get("/:userName/_avatar"){
    val userName = params("userName")
-    getAccountByUserName(userName).flatMap(_.image).map { image =>
-      RawData(FileUtil.getMimeType(image), new java.io.File(getUserUploadDir(userName), image))
-    } getOrElse {
-      contentType = "image/png"
+    contentType = "image/png"
+    getAccountByUserName(userName).flatMap{ account =>
+      response.setDateHeader("Last-Modified", account.updatedDate.getTime)
+      account.image.map{ image =>
+        Some(RawData(FileUtil.getMimeType(image), new java.io.File(getUserUploadDir(userName), image)))
+      }.getOrElse{
+        if (account.isGroupAccount) {
+          TextAvatarUtil.textGroupAvatar(account.fullName)
+        } else {
+          TextAvatarUtil.textAvatar(account.fullName)
+        }
+      }
+    }.getOrElse{
+      response.setHeader("Cache-Control", "max-age=3600")
      Thread.currentThread.getContextClassLoader.getResourceAsStream("noimage.png")
    }
  }
@@ -244,9 +254,13 @@ 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("/")
      }
@@ -450,13 +464,17 @@ 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("/")
  })
--- 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
@@ -125,7 +127,7 @@ trait ApiControllerBase extends ControllerBase {
  get ("/api/v3/repos/:owner/:repo/branches/:branch")(referrersOnly { repository =>
    //import gitbucket.core.api._
    (for{
-      branch     <- params.get("branch") if repository.branchList.find(_ == branch).isDefined
+      branch     <- params.get("branch") if repository.branchList.contains(branch)
      br <- getBranches(repository.owner, repository.name, repository.repository.defaultBranch, repository.repository.originUserName.isEmpty).find(_.name == branch)
    } yield {
      val protection = getProtectedBranchInfo(repository.owner, repository.name, branch)
@@ -287,7 +289,7 @@ trait ApiControllerBase extends ControllerBase {
  patch("/api/v3/repos/:owner/:repo/branches/:branch")(ownerOnly { repository =>
    import gitbucket.core.api._
    (for{
-      branch     <- params.get("branch") if repository.branchList.find(_ == branch).isDefined
+      branch     <- params.get("branch") if repository.branchList.contains(branch)
      protection <- extractFromJsonBody[ApiBranchProtection.EnablingAndDisabling].map(_.protection)
      br <- getBranches(repository.owner, repository.name, repository.repository.defaultBranch, repository.repository.originUserName.isEmpty).find(_.name == branch)
    } yield {
@@ -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)))
--- a/src/main/scala/gitbucket/core/controller/ControllerBase.scala
+++ b/src/main/scala/gitbucket/core/controller/ControllerBase.scala
@@ -40,10 +40,6 @@ abstract class ControllerBase extends ScalatraFilter
    contentType = formats("json")
  }

-// TODO Scala 2.11
-//  // Don't set content type via Accept header.
-//  override def format(implicit request: HttpServletRequest) = ""
-
  override def doFilter(request: ServletRequest, response: ServletResponse, chain: FilterChain): Unit = try {
    val httpRequest  = request.asInstanceOf[HttpServletRequest]
    val httpResponse = response.asInstanceOf[HttpServletResponse]
@@ -151,7 +147,6 @@ abstract class ControllerBase extends ScalatraFilter
      }
    }

-  // TODO Scala 2.11
  override def url(path: String, params: Iterable[(String, Any)] = Iterable.empty,
                   includeContextPath: Boolean = true, includeServletPath: Boolean = true,
                   absolutize: Boolean = true, withSessionId: Boolean = true)
@@ -159,6 +154,18 @@ abstract class ControllerBase extends ScalatraFilter
    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.
+   */
+  protected def trim2[T](valueType: SingleValueType[T]): SingleValueType[T] = new SingleValueType[T](){
+    def convert(value: String, messages: Messages): T = valueType.convert(trim(value), messages)
+
+    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
+  }
+
  /**
   * Use this method to response the raw data against XSS.
   */
--- 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/IndexController.scala
+++ b/src/main/scala/gitbucket/core/controller/IndexController.scala
@@ -26,13 +26,13 @@ trait IndexControllerBase extends ControllerBase {
    "password" -> trim(label("Password", text(required)))
  )(SignInForm.apply)

-  val searchForm = mapping(
-    "query"      -> trim(text(required)),
-    "owner"      -> trim(text(required)),
-    "repository" -> trim(text(required))
-  )(SearchForm.apply)
-
-  case class SearchForm(query: String, owner: String, repository: String)
+//  val searchForm = mapping(
+//    "query"      -> trim(text(required)),
+//    "owner"      -> trim(text(required)),
+//    "repository" -> trim(text(required))
+//  )(SearchForm.apply)
+//
+//  case class SearchForm(query: String, owner: String, repository: String)


  get("/"){
@@ -163,7 +163,7 @@ trait IndexControllerBase extends ControllerBase {

  get("/search"){
    val query = params.getOrElse("query", "").trim.toLowerCase
-    val visibleRepositories = getVisibleRepositories(context.loginAccount, None)
+    val visibleRepositories = getVisibleRepositories(context.loginAccount, repositoryUserName = None, withoutPhysicalInfo = true)
    val repositories = visibleRepositories.filter { repository =>
      repository.name.toLowerCase.indexOf(query) >= 0 || repository.owner.toLowerCase.indexOf(query) >= 0
    }
--- 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)

@@ -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
@@ -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))),
@@ -63,7 +63,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {

  val deployKeyForm = mapping(
    "title"      -> trim(label("Title", text(required, maxlength(100)))),
-    "publicKey"  -> trim(label("Key"  , text(required))), // TODO duplication check in the repository?
+    "publicKey"  -> trim2(label("Key" , text(required))), // TODO duplication check in the repository?
    "allowWrite" -> trim(label("Key"  , boolean()))
  )(DeployKeyForm.apply)

@@ -139,6 +139,12 @@ trait RepositorySettingsControllerBase extends ControllerBase {
          FileUtils.moveDirectory(dir, getLfsDir(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))

@@ -157,7 +163,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {

  /** Update default branch */
  post("/:owner/:repository/settings/update_default_branch", defaultBranchForm)(ownerOnly { (form, repository) =>
-    if(repository.branchList.find(_ == form.defaultBranch).isEmpty){
+    if(!repository.branchList.contains(form.defaultBranch)){
      redirect(s"/${repository.owner}/${repository.name}/settings/options")
    } else {
      saveRepositoryDefaultBranch(repository.owner, repository.name, form.defaultBranch)
@@ -174,7 +180,7 @@ trait RepositorySettingsControllerBase extends ControllerBase {
  get("/:owner/:repository/settings/branches/:branch")(ownerOnly { repository =>
    import gitbucket.core.api._
    val branch = params("branch")
-    if(repository.branchList.find(_ == branch).isEmpty){
+    if(!repository.branchList.contains(branch)){
      redirect(s"/${repository.owner}/${repository.name}/settings/branches")
    } else {
      val protection = ApiBranchProtection(getProtectedBranchInfo(repository.owner, repository.name, branch))
@@ -352,6 +358,12 @@ trait RepositorySettingsControllerBase extends ControllerBase {
            FileUtils.moveDirectory(dir, getLfsDir(form.newOwner, repository.name))
          }
        }
+        // Move attached directory
+        defining(getAttachedDir(repository.owner, repository.name)){ dir =>
+          if(dir.isDirectory) {
+            FileUtils.moveDirectory(dir, getAttachedDir(form.newOwner, repository.name))
+          }
+        }
        // Delere parent directory
        FileUtil.deleteDirectoryIfEmpty(getRepositoryFilesDir(repository.owner, repository.name))

--- 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
@@ -18,14 +18,12 @@ 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._


@@ -45,6 +43,13 @@ 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,
@@ -71,6 +76,13 @@ 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())),
@@ -173,10 +185,37 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    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)
+      None, JGitUtil.ContentInfo("text", None, None, Some("UTF-8")), protectedBranch)
  })

+  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(s"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)
@@ -232,7 +271,7 @@ trait RepositoryViewerControllerBase extends ControllerBase {
      oldFileName = form.oldFileName,
      content     = appendNewLine(convertLineSeparator(form.content, form.lineSeparator), form.lineSeparator),
      charset     = form.charset,
-      message     = if(form.oldFileName.exists(_ == 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}")
@@ -547,6 +586,114 @@ trait RepositoryViewerControllerBase extends ControllerBase {
    }
  })

+  case class UploadFiles(branch: String, path: String, fileIds : Map[String,String], message: String) {
+    lazy val isValid: Boolean = fileIds.size > 0
+  }
+
+  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) = {
+
+    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) =>
+      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")
@@ -597,85 +744,15 @@ 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.exists(_ == path) && !oldPath.exists(_ == 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)

-    val filename = repository.name + "-" +
-      (if(revision.length == 40) revision.substring(0, 10) else revision).replace('/', '_') + suffix
-
    using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
-      val revCommit = JGitUtil.getRevCommitFromId(git, git.getRepository.resolve(revision))
+      val oid = git.getRepository.resolve(revision)
+      val revCommit = JGitUtil.getRevCommitFromId(git, oid)
+      val sha1 = oid.getName()
+      val repositorySuffix = (if(sha1.startsWith(revision)) sha1 else revision).replace('/','-')
+      val filename = repository.name + "-" + repositorySuffix + suffix

      contentType = "application/octet-stream"
      response.setHeader("Content-Disposition", s"attachment; filename=${filename}")
@@ -683,6 +760,7 @@ trait RepositoryViewerControllerBase extends ControllerBase {

      git.archive
         .setFormat(suffix.tail)
+         .setPrefix(repository.name + "-" + repositorySuffix + "/")
         .setTree(revCommit)
         .setOutputStream(response.getOutputStream)
         .call()
--- a/src/main/scala/gitbucket/core/controller/SystemSettingsController.scala
+++ b/src/main/scala/gitbucket/core/controller/SystemSettingsController.scala
@@ -106,7 +106,7 @@ 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 +117,7 @@ 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())),
@@ -225,7 +225,7 @@ 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 +239,10 @@ 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()
@@ -272,18 +276,18 @@ trait SystemSettingsControllerBase extends AccountManagementControllerBase {
      }
    }.toList){ case (groupName, members) =>
      getAccountByUserName(groupName, true).map { account =>
-        updateGroup(groupName, form.url, form.description, form.isRemoved)
+        updateGroup(groupName, form.description, form.url, form.isRemoved)

        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, WebHookEvent}
 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/BasicTemplate.scala
+++ b/src/main/scala/gitbucket/core/model/BasicTemplate.scala
@@ -42,6 +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/DeployKey.scala
+++ b/src/main/scala/gitbucket/core/model/DeployKey.scala
@@ -1,13 +1,11 @@
 package gitbucket.core.model

-trait DeployKeyComponent { self: Profile =>
+trait DeployKeyComponent extends TemplateComponent { self: Profile =>
  import profile.api._

  lazy val DeployKeys = TableQuery[DeployKeys]

-  class DeployKeys(tag: Tag) extends Table[DeployKey](tag, "DEPLOY_KEY") {
-    val userName = column[String]("USER_NAME")
-    val repositoryName = column[String]("REPOSITORY_NAME")
+  class DeployKeys(tag: Tag) extends Table[DeployKey](tag, "DEPLOY_KEY") with BasicTemplate {
    val deployKeyId = column[Int]("DEPLOY_KEY_ID", O AutoInc)
    val title = column[String]("TITLE")
    val publicKey = column[String]("PUBLIC_KEY")
--- 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/Milestone.scala
+++ b/src/main/scala/gitbucket/core/model/Milestone.scala
@@ -9,10 +9,10 @@ trait MilestoneComponent extends TemplateComponent { self: Profile =>
  class Milestones(tag: Tag) extends Table[Milestone](tag, "MILESTONE") with MilestoneTemplate {
    override val milestoneId = column[Int]("MILESTONE_ID", O AutoInc)
    val title = column[String]("TITLE")
-    val description = column[String]("DESCRIPTION")
-    val dueDate = column[java.util.Date]("DUE_DATE")
-    val closedDate = column[java.util.Date]("CLOSED_DATE")
-    def * = (userName, repositoryName, milestoneId, title, description.?, dueDate.?, closedDate.?) <> (Milestone.tupled, Milestone.unapply)
+    val description = column[Option[String]]("DESCRIPTION")
+    val dueDate = column[Option[java.util.Date]]("DUE_DATE")
+    val closedDate = column[Option[java.util.Date]]("CLOSED_DATE")
+    def * = (userName, repositoryName, milestoneId, title, description, dueDate, closedDate) <> (Milestone.tupled, Milestone.unapply)

    def byPrimaryKey(owner: String, repository: String, milestoneId: Int) = byMilestone(owner, repository, milestoneId)
    def byPrimaryKey(userName: Rep[String], repositoryName: Rep[String], milestoneId: Rep[Int]) = byMilestone(userName, repositoryName, milestoneId)
--- 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
@@ -52,6 +52,7 @@ trait CoreProfile extends ProfileProvider with Profile
  with IssueCommentComponent
  with IssueLabelComponent
  with LabelComponent
+  with PriorityComponent
  with MilestoneComponent
  with PullRequestComponent
  with RepositoryComponent
--- 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 +101,26 @@ 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 global menus.
   */
@@ -159,6 +191,16 @@ 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 +251,21 @@ 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)
+    }
    (globalMenus ++ globalMenus(registry, context, settings)).foreach { globalMenu =>
      registry.addGlobalMenu(globalMenu)
    }
@@ -236,6 +287,9 @@ abstract class Plugin {
    (dashboardTabs ++ dashboardTabs(registry, context, settings)).foreach { dashboardTab =>
      registry.addDashboardTab(dashboardTab)
    }
+    (issueSidebars ++ issueSidebars(registry, context, settings)).foreach { issueSidebar =>
+      registry.addIssueSidebar(issueSidebar)
+    }
    (assetsMappings ++ assetsMappings(registry, context, settings)).foreach { assetMapping =>
      registry.addAssetsMapping((assetMapping._1, assetMapping._2, getClass.getClassLoader))
    }
--- a/src/main/scala/gitbucket/core/plugin/PluginRegistory.scala
+++ b/src/main/scala/gitbucket/core/plugin/PluginRegistory.scala
@@ -2,10 +2,11 @@ package gitbucket.core.plugin

 import java.io.{File, FilenameFilter, InputStream}
 import java.net.URLClassLoader
+import java.util.Base64
 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.SystemSettings
@@ -15,8 +16,8 @@ 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.codec.binary.{Base64, StringUtils}
 import org.slf4j.LoggerFactory
+import play.twirl.api.Html

 import scala.collection.mutable
 import scala.collection.mutable.ListBuffer
@@ -32,10 +33,17 @@ class PluginRegistry {
    "md" -> MarkdownRenderer, "markdown" -> MarkdownRenderer
  )
  private val repositoryRoutings = new ListBuffer[GitRepositoryRouting]
+  private val accountHooks = new ListBuffer[AccountHook]
  private val receiveHooks = new ListBuffer[ReceiveHook]
  receiveHooks += new ProtectedBranchReceiveHook()

  private val repositoryHooks = new ListBuffer[RepositoryHook]
+  private val issueHooks = new ListBuffer[IssueHook]
+  issueHooks += new gitbucket.core.util.Notifier.IssueHook()
+
+  private val pullRequestHooks = new ListBuffer[PullRequestHook]
+  pullRequestHooks += new gitbucket.core.util.Notifier.PullRequestHook()
+
  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]]
@@ -43,6 +51,7 @@ class PluginRegistry {
  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 issueSidebars = new ListBuffer[(Issue, RepositoryInfo, Context) => Option[Html]]
  private val assetsMappings = new ListBuffer[(String, String, ClassLoader)]
  private val textDecorators = new ListBuffer[TextDecorator]

@@ -54,7 +63,7 @@ class PluginRegistry {
  def getPlugins(): List[PluginInfo] = plugins.toList

  def addImage(id: String, bytes: Array[Byte]): Unit = {
-    val encoded = StringUtils.newStringUtf8(Base64.encodeBase64(bytes, false))
+    val encoded = Base64.getEncoder.encodeToString(bytes)
    images += ((id, encoded))
  }

@@ -83,7 +92,7 @@ class PluginRegistry {

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

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

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

@@ -99,6 +108,10 @@ class PluginRegistry {
    }
  }

+  def addAccountHook(accountHook: AccountHook): Unit = accountHooks += accountHook
+
+  def getAccountHooks: Seq[AccountHook] = accountHooks.toSeq
+
  def addReceiveHook(commitHook: ReceiveHook): Unit = receiveHooks += commitHook

  def getReceiveHooks: Seq[ReceiveHook] = receiveHooks.toSeq
@@ -107,6 +120,14 @@ class PluginRegistry {

  def getRepositoryHooks: Seq[RepositoryHook] = repositoryHooks.toSeq

+  def addIssueHook(issueHook: IssueHook): Unit = issueHooks += issueHook
+
+  def getIssueHooks: Seq[IssueHook] = issueHooks.toSeq
+
+  def addPullRequestHook(pullRequestHook: PullRequestHook): Unit = pullRequestHooks += pullRequestHook
+
+  def getPullRequestHooks: Seq[PullRequestHook] = pullRequestHooks.toSeq
+
  def addGlobalMenu(globalMenu: (Context) => Option[Link]): Unit = globalMenus += globalMenu

  def getGlobalMenus: Seq[(Context) => Option[Link]] = globalMenus.toSeq
@@ -135,6 +156,10 @@ class PluginRegistry {

  def getDashboardTabs: Seq[(Context) => Option[Link]] = dashboardTabs.toSeq

+  def addIssueSidebar(issueSidebar: (Issue, RepositoryInfo, Context) => Option[Html]): Unit = issueSidebars += issueSidebar
+
+  def getIssueSidebars: Seq[(Issue, RepositoryInfo, Context) => Option[Html]] = issueSidebars.toSeq
+
  def addAssetsMapping(assetsMapping: (String, String, ClassLoader)): Unit = assetsMappings += assetsMapping

  def getAssetsMappings: Seq[(String, String, ClassLoader)] = assetsMappings.toSeq
@@ -172,10 +197,10 @@ object PluginRegistry {
    if(pluginDir.exists && pluginDir.isDirectory){
      pluginDir.listFiles(new FilenameFilter {
        override def accept(dir: File, name: String): Boolean = name.endsWith(".jar")
-      }).foreach { pluginJar =>
+      }).sortBy(_.getName).foreach { pluginJar =>
        val classLoader = new URLClassLoader(Array(pluginJar.toURI.toURL), Thread.currentThread.getContextClassLoader)
        try {
-          val plugin = classLoader.loadClass("Plugin").newInstance().asInstanceOf[Plugin]
+          val plugin = classLoader.loadClass("Plugin").getDeclaredConstructor().newInstance().asInstanceOf[Plugin]

          // Migration
          val solidbase = new Solidbase()
--- a/src/main/scala/gitbucket/core/service/AccountService.scala
+++ b/src/main/scala/gitbucket/core/service/AccountService.scala
@@ -166,8 +166,8 @@ trait AccountService {

  def updateGroup(groupName: String, description: Option[String], url: Option[String], removed: Boolean)(implicit s: Session): Unit =
    Accounts.filter(_.userName === groupName.bind)
-      .map(t => (t.url.?, t.description.?, t.removed))
-      .update(url, description, removed)
+      .map(t => (t.url.?, t.description.?, t.updatedDate, t.removed))
+      .update(url, description, currentDate, removed)

  def updateGroupMembers(groupName: String, members: List[(String, Boolean)])(implicit s: Session): Unit = {
    GroupMembers.filter(_.groupName === groupName.bind).delete
--- 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 ( _ (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
@@ -97,6 +97,30 @@ 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 =>
@@ -111,7 +135,7 @@ trait IssuesService {
      val (_, cs) = status.head
      Some(CommitStatusInfo(
        count        = status.length,
-        successCount = status.filter(_._2.state == CommitState.SUCCESS).length,
+        successCount = status.count(_._2.state == CommitState.SUCCESS),
        context      = (if(status.length == 1) Some(cs.context) else None),
        state        = (if(status.length == 1) Some(cs.state)   else None),
        targetUrl    = (if(status.length == 1) cs.targetUrl     else None),
@@ -136,21 +160,23 @@ 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 +230,10 @@ 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 +249,7 @@ 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 +258,11 @@ 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 +289,7 @@ 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 +300,7 @@ trait IssuesService {
        id,
        loginUser,
        milestoneId,
+        priorityId,
        assignedUserName,
        title,
        content,
@@ -316,6 +353,10 @@ trait IssuesService {
    Issues.filter (_.byPrimaryKey(owner, repository, issueId)).map(_.milestoneId?).update (milestoneId)
  }

+  def updatePriorityId(owner: String, repository: String, issueId: Int, priorityId: Option[Int])(implicit s: Session): Int = {
+    Issues.filter (_.byPrimaryKey(owner, repository, issueId)).map(_.priorityId?).update (priorityId)
+  }
+
  def updateComment(commentId: Int, content: String)(implicit s: Session): Int = {
    IssueComments.filter (_.byPrimaryKey(commentId)).map(t => (t.content, t.updatedDate)).update(content, currentDate)
  }
@@ -430,6 +471,7 @@ 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,
@@ -459,6 +501,10 @@ object IssuesService {
          case Some(x) => s"milestone:${x}"
          case None    => "no:milestone"
        }},
+        priority.map { _ match {
+          case Some(x) => s"priority:${x}"
+          case None    => "no:priority"
+        }},
        (sort, direction) match {
          case ("created" , "desc") => None
          case ("created" , "asc" ) => Some("sort:created-asc")
@@ -466,6 +512,8 @@ 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 +528,10 @@ 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 +564,10 @@ 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 +575,7 @@ 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 +591,6 @@ 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/MilestonesService.scala
+++ b/src/main/scala/gitbucket/core/service/MilestonesService.scala
@@ -21,7 +21,7 @@ trait MilestonesService {
  def updateMilestone(milestone: Milestone)(implicit s: Session): Unit =
    Milestones
      .filter (t =>  t.byPrimaryKey(milestone.userName, milestone.repositoryName, milestone.milestoneId))
-      .map    (t => (t.title, t.description.?, t.dueDate.?, t.closedDate.?))
+      .map    (t => (t.title, t.description, t.dueDate, t.closedDate))
      .update (milestone.title, milestone.description, milestone.dueDate, milestone.closedDate)

  def openMilestone(milestone: Milestone)(implicit s: Session): Unit =
--- 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
@@ -76,7 +76,7 @@ object ProtectedBranchService {
    includeAdministrators: Boolean) extends AccountService with CommitStatusService {

    def isAdministrator(pusher: String)(implicit session: Session): Boolean =
-      pusher == owner || getGroupMembers(owner).filter(gm => gm.userName == pusher && gm.isManager).nonEmpty
+      pusher == owner || getGroupMembers(owner).exists(gm => gm.userName == pusher && gm.isManager)

    /**
     * Can't be force pushed
--- a/src/main/scala/gitbucket/core/service/PullRequestService.scala
+++ b/src/main/scala/gitbucket/core/service/PullRequestService.scala
@@ -265,7 +265,7 @@ object PullRequestService {
      val summary = stateMap.map{ case (keyState, states) => states.size+" "+keyState.name }.mkString(", ")
      state -> summary
    }
-    lazy val statusesAndRequired:List[(CommitStatus, Boolean)] = statuses.map{ s => s -> branchProtection.contexts.exists(_==s.context) }
+    lazy val statusesAndRequired:List[(CommitStatus, Boolean)] = statuses.map{ s => s -> branchProtection.contexts.contains(s.context) }
    lazy val isAllSuccess = commitStateSummary._1==CommitState.SUCCESS
  }
 }
--- 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/RepositoryService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositoryService.scala
@@ -66,6 +66,7 @@ trait RepositoryService { self: AccountService =>
        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
@@ -73,6 +74,7 @@ trait RepositoryService { self: AccountService =>
        val collaborators           = Collaborators          .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val protectedBranches       = ProtectedBranches      .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val protectedBranchContexts = ProtectedBranchContexts.filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val deployKeys              = DeployKeys             .filter(_.byRepository(oldUserName, oldRepositoryName)).list

        Repositories.filter { t =>
          (t.originUserName === oldUserName.bind) && (t.originRepositoryName === oldRepositoryName.bind)
@@ -80,7 +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.
@@ -94,14 +96,19 @@ trait RepositoryService { self: AccountService =>
        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
          }
        )} :_*)

@@ -112,6 +119,7 @@ trait RepositoryService { self: AccountService =>
        CommitStatuses         .insertAll(commitStatuses.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
        ProtectedBranches      .insertAll(protectedBranches.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
        ProtectedBranchContexts.insertAll(protectedBranchContexts.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        DeployKeys             .insertAll(deployKeys    .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)

        // Update source repository of pull requests
        PullRequests.filter { t =>
@@ -126,11 +134,6 @@ trait RepositoryService { self: AccountService =>
          userName       = newUserName,
          repositoryName = newRepositoryName
        )) :_*)
-        IssueLabels.insertAll(issueLabels.map(x => x.copy(
-          labelId        = newLabelMap(oldLabelMap(x.labelId)),
-          userName       = newUserName,
-          repositoryName = newRepositoryName
-        )) :_*)

        // TODO Drop transfered owner from collaborators?
        Collaborators.insertAll(collaborators.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
@@ -164,10 +167,12 @@ 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
    RepositoryWebHooks      .filter(_.byRepository(userName, repositoryName)).delete
    RepositoryWebHookEvents .filter(_.byRepository(userName, repositoryName)).delete
+    DeployKeys    .filter(_.byRepository(userName, repositoryName)).delete
    Repositories  .filter(_.byRepository(userName, repositoryName)).delete

    // Update ORIGIN_USER_NAME and ORIGIN_REPOSITORY_NAME
@@ -264,11 +269,19 @@ trait RepositoryService { self: AccountService =>
          JGitUtil.getRepositoryInfo(repository.userName, repository.repositoryName)
        },
        repository,
-        getForkedCount(
-          repository.originUserName.getOrElse(repository.userName),
-          repository.originRepositoryName.getOrElse(repository.repositoryName)
-        ),
-        getRepositoryManagers(repository.userName))
+        if(withoutPhysicalInfo){
+          -1
+        } else {
+          getForkedCount(
+            repository.originUserName.getOrElse(repository.userName),
+            repository.originRepositoryName.getOrElse(repository.repositoryName)
+          )
+        },
+        if(withoutPhysicalInfo){
+          Nil
+        } else {
+          getRepositoryManagers(repository.userName)
+        })
    }
  }

@@ -302,7 +315,7 @@ trait RepositoryService { self: AccountService =>
      case None => Repositories filter(_.isPrivate === false.bind)
    }).filter { t =>
      repositoryUserName.map { userName => t.userName === userName.bind } getOrElse LiteralColumn(true)
-    }.sortBy(_.lastActivityDate desc).list.map{ repository =>
+    }.sortBy(_.lastActivityDate desc).list.map { repository =>
      new RepositoryInfo(
        if(withoutPhysicalInfo){
          new JGitUtil.RepositoryInfo(repository.userName, repository.repositoryName)
@@ -310,11 +323,19 @@ trait RepositoryService { self: AccountService =>
          JGitUtil.getRepositoryInfo(repository.userName, repository.repositoryName)
        },
        repository,
-        getForkedCount(
-          repository.originUserName.getOrElse(repository.userName),
-          repository.originRepositoryName.getOrElse(repository.repositoryName)
-        ),
-        getRepositoryManagers(repository.userName))
+        if(withoutPhysicalInfo){
+          -1
+        } else {
+          getForkedCount(
+            repository.originUserName.getOrElse(repository.userName),
+            repository.originRepositoryName.getOrElse(repository.repositoryName)
+          )
+        },
+        if(withoutPhysicalInfo) {
+          Nil
+        } else {
+          getRepositoryManagers(repository.userName)
+        })
    }
  }

--- a/src/main/scala/gitbucket/core/service/WebHookService.scala
+++ b/src/main/scala/gitbucket/core/service/WebHookService.scala
@@ -8,7 +8,7 @@ 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
@@ -205,7 +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{
@@ -223,7 +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{
@@ -269,7 +269,7 @@ trait WebHookPullRequestService extends WebHookService {
    }).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)
@@ -291,12 +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{
@@ -330,7 +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())
@@ -526,4 +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
@@ -177,7 +177,7 @@ trait WikiService {
            val headId   = git.getRepository.resolve(Constants.HEAD + "^{commit}")

            JGitUtil.processTree(git, headId){ (path, tree) =>
-              if(revertInfo.find(x => x.filePath == path).isEmpty){
+              if(!revertInfo.exists(x => x.filePath == path)){
                builder.add(JGitUtil.createDirCacheEntry(path, tree.getEntryFileMode, tree.getEntryObjectId))
              }
            }
--- a/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
@@ -18,9 +18,9 @@ class GitAuthenticationFilter extends Filter with RepositoryService with Account
  private val logger = LoggerFactory.getLogger(classOf[GitAuthenticationFilter])

  def init(config: FilterConfig) = {}
-  
+
  def destroy(): Unit = {}
-  
+
  def doFilter(req: ServletRequest, res: ServletResponse, chain: FilterChain): Unit = {
    val request  = req.asInstanceOf[HttpServletRequest]
    val response = res.asInstanceOf[HttpServletResponse]
@@ -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)
+      }
    }
  }

@@ -85,11 +85,16 @@ class GitAuthenticationFilter extends Filter with RepositoryService with Account
                  auth <- Option(request.getHeader("Authorization"))
                  Array(username, password) = AuthUtil.decodeAuthHeader(auth).split(":", 2)
                  account <- authenticate(settings, username, password)
-                } yield if (isUpdating || repository.repository.isPrivate) {
+                } yield if (isUpdating) {
                  if (hasDeveloperRole(repository.owner, repository.name, Some(account))) {
                    request.setAttribute(Keys.Request.UserName, account.userName)
                    true
                  } else false
+                } else if(repository.repository.isPrivate){
+                  if (hasGuestRole(repository.owner, repository.name, Some(account))) {
+                    request.setAttribute(Keys.Request.UserName, account.userName)
+                    true
+                  } else false
                } else true
                passed.getOrElse(false)
              }
@@ -114,4 +119,4 @@ class GitAuthenticationFilter extends Filter with RepositoryService with Account

    action()
  }
-}
+}
--- 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.replaceFirst("\\.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/PluginAssetsServlet.scala
+++ b/src/main/scala/gitbucket/core/servlet/PluginAssetsServlet.scala
@@ -26,6 +26,7 @@ class PluginAssetsServlet extends HttpServlet {
          val bytes = IOUtils.toByteArray(in)
          resp.setContentLength(bytes.length)
          resp.setContentType(FileUtil.getContentType(path, bytes))
+          resp.setHeader("Cache-Control", "max-age=3600")
          resp.getOutputStream.write(bytes)
        } finally {
          in.close()
--- a/src/main/scala/gitbucket/core/ssh/GitCommand.scala
+++ b/src/main/scala/gitbucket/core/ssh/GitCommand.scala
@@ -105,7 +105,7 @@ abstract class DefaultGitCommand(val owner: String, val repoName: String) extend
        }
      }
      case AuthType.DeployKeyType(key) => {
-        getDeployKeys(owner, repoName).filter(sshKey => SshUtil.str2PublicKey(sshKey.publicKey).exists(_ == key)) match {
+        getDeployKeys(owner, repoName).filter(sshKey => SshUtil.str2PublicKey(sshKey.publicKey).contains(key)) match {
          case List(_) => true
          case _ => false
        }
@@ -123,7 +123,7 @@ abstract class DefaultGitCommand(val owner: String, val repoName: String) extend
        }
      }
      case AuthType.DeployKeyType(key) => {
-        getDeployKeys(owner, repoName).filter(sshKey => SshUtil.str2PublicKey(sshKey.publicKey).exists(_ == key)) match {
+        getDeployKeys(owner, repoName).filter(sshKey => SshUtil.str2PublicKey(sshKey.publicKey).contains(key)) match {
          case List(x) if x.allowWrite => true
          case _ => false
        }
--- a/src/main/scala/gitbucket/core/ssh/PublicKeyAuthenticator.scala
+++ b/src/main/scala/gitbucket/core/ssh/PublicKeyAuthenticator.scala
@@ -68,7 +68,7 @@ class PublicKeyAuthenticator(genericUser: String) extends PublickeyAuthenticator
  private def authenticateGenericUser(userName: String, key: PublicKey, session: ServerSession, genericUser: String)(implicit s: Session): Boolean = {
    // find all users having the key we got from ssh
    val possibleUserNames = getAllKeys().filter { sshKey =>
-      SshUtil.str2PublicKey(sshKey.publicKey).exists(_ == key)
+      SshUtil.str2PublicKey(sshKey.publicKey).contains(key)
    }.map(_.userName).distinct

    // determine the user - if different accounts share the same key, tough luck
@@ -85,7 +85,7 @@ class PublicKeyAuthenticator(genericUser: String) extends PublickeyAuthenticator
    }.getOrElse {
      // search deploy keys
      val existsDeployKey = getAllDeployKeys().exists { sshKey =>
-        SshUtil.str2PublicKey(sshKey.publicKey).exists(_ == key)
+        SshUtil.str2PublicKey(sshKey.publicKey).contains(key)
      }
      if(existsDeployKey){
        // found deploy key for repository
--- a/src/main/scala/gitbucket/core/ssh/SshUtil.scala
+++ b/src/main/scala/gitbucket/core/ssh/SshUtil.scala
@@ -1,8 +1,8 @@
 package gitbucket.core.ssh

 import java.security.PublicKey
+import java.util.Base64

-import org.apache.commons.codec.binary.Base64
 import org.apache.sshd.common.config.keys.KeyUtils
 import org.apache.sshd.common.util.buffer.ByteArrayBuffer
 import org.eclipse.jgit.lib.Constants
@@ -18,16 +18,17 @@ object SshUtil {
    val parts = key.split(" ")
    if (parts.size < 2) {
      logger.debug(s"Invalid PublicKey Format: ${key}")
-      return None
-    }
-    try {
-      val encodedKey = parts(1)
-      val decode = Base64.decodeBase64(Constants.encodeASCII(encodedKey))
-      Some(new ByteArrayBuffer(decode).getRawPublicKey)
-    } catch {
-      case e: Throwable =>
-        logger.debug(e.getMessage, e)
-        None
+      None
+    } else {
+      try {
+        val encodedKey = parts(1)
+        val decode = Base64.getDecoder.decode(Constants.encodeASCII(encodedKey))
+        Some(new ByteArrayBuffer(decode).getRawPublicKey)
+      } catch {
+        case e: Throwable =>
+          logger.debug(e.getMessage, e)
+          None
+      }
    }
  }

--- a/src/main/scala/gitbucket/core/util/AuthUtil.scala
+++ b/src/main/scala/gitbucket/core/util/AuthUtil.scala
@@ -1,5 +1,6 @@
 package gitbucket.core.util

+import java.util.Base64
 import javax.servlet.http.HttpServletResponse

 /**
@@ -13,9 +14,9 @@ object AuthUtil {

  def decodeAuthHeader(header: String): String = {
    try {
-      new String(new sun.misc.BASE64Decoder().decodeBuffer(header.substring(6)))
+      new String(Base64.getDecoder.decode(header.substring(6)))
    } catch {
      case _: Throwable => ""
    }
  }
-}
+}
--- a/src/main/scala/gitbucket/core/util/JGitUtil.scala
+++ b/src/main/scala/gitbucket/core/util/JGitUtil.scala
@@ -538,6 +538,7 @@ object JGitUtil {
      } else {
        // initial commit
        using(new TreeWalk(git.getRepository)){ treeWalk =>
+          treeWalk.setRecursive(true)
          treeWalk.addTree(revCommit.getTree)
          val buffer = new scala.collection.mutable.ListBuffer[DiffInfo]()
          while(treeWalk.next){
@@ -951,7 +952,7 @@ object JGitUtil {
   * @return the last modified commit of specified path
   */
  def getLastModifiedCommit(git: Git, startCommit: RevCommit, path: String): RevCommit = {
-    return git.log.add(startCommit).addPath(path).setMaxCount(1).call.iterator.next
+    git.log.add(startCommit).addPath(path).setMaxCount(1).call.iterator.next
  }

  def getBranches(owner: String, name: String, defaultBranch: String, origin: Boolean): Seq[BranchInfo] = {
--- a/src/main/scala/gitbucket/core/util/Notifier.scala
+++ b/src/main/scala/gitbucket/core/util/Notifier.scala
@@ -13,87 +13,157 @@ 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
+  // TODO This class is temporary keeping the current feature until Notifications Plugin is available.
+  class IssueHook extends gitbucket.core.plugin.IssueHook
+    with RepositoryService with AccountService with IssuesService {

-  def msgComment(url: String) = (content: String) => s"""
-    |${content}<br/>
-    |--<br/>
-    |<a href="${url}">View it on GitBucket</a>
-    """.stripMargin
+    override def created(issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      Notifier().toNotify(
+        subject(issue, r),
+        message(issue.content getOrElse "", r)(content => s"""
+          |$content<br/>
+          |--<br/>
+          |<a href="${s"${context.baseUrl}/${r.owner}/${r.name}/issues/${issue.issueId}"}">View it on GitBucket</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+
+    override def addedComment(commentId: Int, content: String, issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      Notifier().toNotify(
+        subject(issue, r),
+        message(content, r)(content => s"""
+          |$content<br/>
+          |--<br/>
+          |<a href="${s"${context.baseUrl}/${r.owner}/${r.name}/issues/${issue.issueId}#comment-$commentId"}">View it on GitBucket</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+
+    override def closed(issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      Notifier().toNotify(
+        subject(issue, r),
+        message("close", r)(content => s"""
+          |$content <a href="${s"${context.baseUrl}/${r.owner}/${r.name}/issues/${issue.issueId}"}">#${issue.issueId}</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+
+    override def reopened(issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      Notifier().toNotify(
+        subject(issue, r),
+        message("reopen", r)(content => s"""
+          |$content <a href="${s"${context.baseUrl}/${r.owner}/${r.name}/issues/${issue.issueId}"}">#${issue.issueId}</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+
+
+    protected def subject(issue: Issue, r: RepositoryService.RepositoryInfo): String =
+      s"[${r.owner}/${r.name}] ${issue.title} (#${issue.issueId})"
+
+    protected def message(content: String, r: RepositoryService.RepositoryInfo)(msg: String => String)(implicit context: Context): String =
+      msg(Markdown.toHtml(
+        markdown         = content,
+        repository       = r,
+        enableWikiLink   = false,
+        enableRefsLink   = true,
+        enableAnchor     = false,
+        enableLineBreaks = false
+      ))
+
+    protected val recipients: Issue => Account => Session => Seq[String] = {
+      issue => loginAccount => implicit 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
+        .flatMap (
+          getAccountByUserName(_)
+            .filterNot (_.isGroupAccount)
+            .filterNot (LDAPUtil.isDummyMailAddress)
+            .map (_.mailAddress)
+        )
+    }
+  }
+
+  // TODO This class is temporary keeping the current feature until Notifications Plugin is available.
+  class PullRequestHook extends IssueHook with gitbucket.core.plugin.PullRequestHook {
+    override def created(issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      val url = s"${context.baseUrl}/${r.owner}/${r.name}/pull/${issue.issueId}"
+      Notifier().toNotify(
+        subject(issue, r),
+        message(issue.content getOrElse "", r)(content => s"""
+          |$content<hr/>
+          |View, comment on, or merge it at:<br/>
+          |<a href="$url">$url</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+
+    override def addedComment(commentId: Int, content: String, issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      Notifier().toNotify(
+        subject(issue, r),
+        message(content, r)(content => s"""
+          |$content<br/>
+          |--<br/>
+          |<a href="${s"${context.baseUrl}/${r.owner}/${r.name}/pull/${issue.issueId}#comment-$commentId"}">View it on GitBucket</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+
+    override def merged(issue: Issue, r: RepositoryService.RepositoryInfo)(implicit context: Context): Unit = {
+      Notifier().toNotify(
+        subject(issue, r),
+        message("merge", r)(content => s"""
+          |$content <a href="${s"${context.baseUrl}/${r.owner}/${r.name}/pull/${issue.issueId}"}">#${issue.issueId}</a>
+          """.stripMargin)
+      )(recipients(issue))
+    }
+  }

-  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 +207,6 @@ 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
@@ -1,12 +1,12 @@
 package gitbucket.core.util

 import java.net.{URLDecoder, URLEncoder}
+import java.util.Base64

 import org.mozilla.universalchardet.UniversalDetector
 import SyntaxSugars._
 import org.apache.commons.io.input.BOMInputStream
 import org.apache.commons.io.IOUtils
-import org.apache.commons.codec.binary.Base64

 import scala.util.control.Exception._

@@ -34,14 +34,14 @@ object StringUtil {
    val spec = new javax.crypto.spec.SecretKeySpec(BlowfishKey.getBytes(), "Blowfish")
    val cipher = javax.crypto.Cipher.getInstance("Blowfish")
    cipher.init(javax.crypto.Cipher.ENCRYPT_MODE, spec)
-    new String(Base64.encodeBase64(cipher.doFinal(value.getBytes("UTF-8"))), "UTF-8")
+    Base64.getEncoder.encodeToString(cipher.doFinal(value.getBytes("UTF-8")))
  }

  def decodeBlowfish(value: String): String = {
    val spec = new javax.crypto.spec.SecretKeySpec(BlowfishKey.getBytes(), "Blowfish")
    val cipher = javax.crypto.Cipher.getInstance("Blowfish")
    cipher.init(javax.crypto.Cipher.DECRYPT_MODE, spec)
-    new String(cipher.doFinal(Base64.decodeBase64(value)), "UTF-8")
+    new String(cipher.doFinal(Base64.getDecoder.decode(value)), "UTF-8")
  }

  def urlEncode(value: String): String = URLEncoder.encode(value, "UTF-8").replace("+", "%20")
@@ -136,6 +136,4 @@ object StringUtil {
 //    }
 //    b.toString
 //  }
-
-
 }
--- a/src/main/scala/gitbucket/core/util/TextAvatarUtil.scala
+++ b/src/main/scala/gitbucket/core/util/TextAvatarUtil.scala
@@ -0,0 +1,127 @@
+package gitbucket.core.util
+
+import java.io.ByteArrayOutputStream
+import java.awt.image.BufferedImage
+import javax.imageio.ImageIO
+import java.awt.{Color, Font, Graphics2D, RenderingHints}
+import java.awt.font.{FontRenderContext, TextLayout}
+import java.awt.geom.AffineTransform
+
+
+object TextAvatarUtil {
+  private val iconSize = 200
+  private val fontSize = 180
+  private val roundSize = 60
+  private val shadowSize = 20
+  private val bgSaturation = 0.68f
+  private val bgBlightness = 0.73f
+  private val shadowBlightness = 0.23f
+  private val font = new Font(Font.SANS_SERIF, Font.PLAIN, fontSize)
+  private val transparent = new Color(0, 0, 0, 0)
+
+  // https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
+  private def relativeLuminance(c: Color): Double = {
+    val rgb = Seq(c.getRed, c.getGreen, c.getBlue).map{_/255.0}.map{x => if (x <= 0.03928) x / 12.92 else math.pow((x + 0.055) / 1.055, 2.4)}
+    0.2126 * rgb(0) + 0.7152 * rgb(1) + 0.0722 * rgb(2)
+  }
+
+  // https://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef
+  private def contrastRatio(c1: Color, c2: Color): Double = {
+    val l1 = relativeLuminance(c1)
+    val l2 = relativeLuminance(c2)
+    if (l1 > l2) (l1 + 0.05) / (l2 + 0.05) else (l2 + 0.05) / (l1 + 0.05)
+  }
+
+  private def goodContrastColor(base: Color, c1: Color, c2: Color): Color = {
+    if (contrastRatio(base, c1) > contrastRatio(base, c2)) c1 else c2
+  }
+
+  private def strToHue(text: String): Float = {
+    Integer.parseInt(StringUtil.md5(text).substring(0, 2), 16) / 256f
+  }
+
+  private def getCenterToDraw(drawText: String, font: Font, w: Int, h: Int): (Int, Int) = {
+    val context = new FontRenderContext(new AffineTransform(), true, true)
+    val txt = new TextLayout(drawText, font, context)
+
+    val bounds = txt.getBounds
+
+    val x: Int = ((w - bounds.getWidth) / 2 - bounds.getX).toInt
+    val y: Int = ((h - bounds.getHeight) / 2 - bounds.getY).toInt
+    (x, y)
+  }
+
+  private def textImage(drawText: String, bgColor: Color, fgColor: Color): Array[Byte] = {
+    val canvas = new BufferedImage(iconSize, iconSize, BufferedImage.TYPE_INT_ARGB)
+    val g = canvas.createGraphics()
+    val center = getCenterToDraw(drawText, font, iconSize, iconSize)
+
+    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
+
+    g.setColor(transparent)
+    g.fillRect(0, 0, iconSize, iconSize)
+
+    g.setColor(bgColor)
+    g.fillRoundRect(0, 0, iconSize, iconSize, roundSize, roundSize)
+
+    g.setColor(fgColor)
+    g.setFont(font)
+    g.drawString(drawText, center._1, center._2)
+
+    g.dispose()
+
+    val stream = new ByteArrayOutputStream
+    ImageIO.write(canvas, "png", stream)
+    stream.toByteArray
+  }
+
+  def textAvatar(nameText: String): Option[Array[Byte]] = {
+    val drawText = nameText.substring(0, 1)
+
+    val bgHue = strToHue(nameText)
+    val bgColor = Color.getHSBColor(bgHue, bgSaturation, bgBlightness)
+    val fgColor = goodContrastColor(bgColor, Color.BLACK, Color.WHITE)
+
+    val font = new Font(Font.SANS_SERIF, Font.PLAIN, fontSize)
+    if (font.canDisplayUpTo(drawText) == -1) Some(textImage(drawText, bgColor, fgColor)) else None
+  }
+
+  private def textGroupImage(drawText: String, bgColor: Color, fgColor: Color, shadowColor: Color): Array[Byte] = {
+    val canvas = new BufferedImage(iconSize, iconSize, BufferedImage.TYPE_INT_ARGB)
+    val g = canvas.createGraphics()
+    val center = getCenterToDraw(drawText, font, iconSize - shadowSize, iconSize - shadowSize)
+
+    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
+
+    g.setColor(transparent)
+    g.fillRect(0, 0, iconSize, iconSize)
+
+    g.setColor(shadowColor)
+    g.fillRect(shadowSize, shadowSize, iconSize, iconSize)
+
+    g.setColor(bgColor)
+    g.fillRect(0, 0, iconSize - shadowSize, iconSize - shadowSize)
+
+    g.setColor(fgColor)
+
+    g.setFont(font)
+    g.drawString(drawText, center._1, center._2)
+
+    g.dispose()
+
+    val stream = new ByteArrayOutputStream
+    ImageIO.write(canvas, "png", stream)
+    stream.toByteArray
+  }
+
+  def textGroupAvatar(nameText: String): Option[Array[Byte]] = {
+    val drawText = nameText.substring(0, 1)
+
+    val bgHue = strToHue(nameText)
+    val bgColor = Color.getHSBColor(bgHue, bgSaturation, bgBlightness)
+    val fgColor = goodContrastColor(bgColor, Color.BLACK, Color.WHITE)
+    val shadowColor = Color.getHSBColor(bgHue, bgSaturation, shadowBlightness)
+
+    if (font.canDisplayUpTo(drawText) == -1) Some(textGroupImage(drawText, bgColor, fgColor, shadowColor)) else None
+  }
+}
--- 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(!value.matches("[a-zA-Z0-9\\-_.]+")){
+        Some(s"${name} contains invalid character.")
+      } else {
+        None
+      }
+  }
+
+
  /**
   * Constraint for the repository identifier.
   */
--- a/src/main/scala/gitbucket/core/view/AvatarImageProvider.scala
+++ b/src/main/scala/gitbucket/core/view/AvatarImageProvider.scala
@@ -20,7 +20,7 @@ trait AvatarImageProvider { self: RequestCache =>
        if(account.image.isEmpty && context.settings.gravatar){
          s"""https://www.gravatar.com/avatar/${StringUtil.md5(account.mailAddress.toLowerCase)}?s=${size}&d=retro&r=g"""
        } else {
-          s"""${context.path}/${account.userName}/_avatar"""
+          s"""${context.path}/${account.userName}/_avatar?${helpers.hashDate(account.updatedDate)}"""
        }
      } getOrElse {
        s"""${context.path}/_unknown/_avatar"""
@@ -31,7 +31,7 @@ trait AvatarImageProvider { self: RequestCache =>
        if(account.image.isEmpty && context.settings.gravatar){
          s"""https://www.gravatar.com/avatar/${StringUtil.md5(account.mailAddress.toLowerCase)}?s=${size}&d=retro&r=g"""
        } else {
-          s"""${context.path}/${account.userName}/_avatar"""
+          s"""${context.path}/${account.userName}/_avatar?${helpers.hashDate(account.updatedDate)}"""
        }
      } getOrElse {
        if(context.settings.gravatar){
@@ -49,4 +49,4 @@ trait AvatarImageProvider { self: RequestCache =>
    }
  }

-}
+}
--- a/src/main/scala/gitbucket/core/view/Markdown.scala
+++ b/src/main/scala/gitbucket/core/view/Markdown.scala
@@ -38,13 +38,11 @@ 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,
      enableWikiLink, enableRefsLink, enableAnchor, enableTaskList, hasWritePermission, pages)

-    //helpers.decorateHtml(Marked.marked(source, options, renderer), repository)
    Marked.marked(source, options, renderer)
  }

--- a/src/main/scala/gitbucket/core/view/helpers.scala
+++ b/src/main/scala/gitbucket/core/view/helpers.scala
@@ -74,6 +74,21 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
   */
  def date(date: Date): String = new SimpleDateFormat("yyyy-MM-dd").format(date)

+  /**
+   * Format java.util.Date to "yyyyMMDDHHmmss" (for url hash ex. /some/path.css?19800101010203
+   */
+  def hashDate(date: Date): String = new SimpleDateFormat("yyyyMMddHHmmss").format(date)
+
+  /**
+   * java.util.Date of boot timestamp.
+   */
+  val bootDate: Date = new Date()
+
+  /**
+   * hashDate of bootDate for /assets, /plugin-assets
+   */
+  def hashQuery: String = hashDate(bootDate)
+
  /**
   * Returns singular if count is 1, otherwise plural.
   * If plural is not specified, returns singular + "s" as plural.
@@ -209,8 +224,14 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
  /**
   * Returns the url to the root of assets.
   */
+  @deprecated("Use assets(path: String)(implicit context: Context) instead.", "4.11.0")
  def assets(implicit context: Context): String = s"${context.path}/assets"

+  /**
+   * Returns the url to the path of assets.
+   */
+  def assets(path: String)(implicit context: Context): String = s"${context.path}/assets${path}?${hashQuery}"
+
  /**
   * Generates the text link to the account page.
   * If user does not exist or disabled, this method returns user name as text without link.
@@ -344,6 +365,10 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
    decorateHtml(HtmlFormat.fill(out).toString, repository)
  }

+  /**
+   * Decorate a given HTML by TextDecorators which are provided by plug-ins.
+   * TextDecorators are applied to only text parts of a given HTML.
+   */
  def decorateHtml(html: String, repository: RepositoryInfo)(implicit context: Context): String = {
    PluginRegistry().getTextDecorators.foldLeft(html){ case (html, decorator) =>
      val text = new StringBuilder()
--- a/src/main/twirl/gitbucket/core/account/activity.scala.html
+++ b/src/main/twirl/gitbucket/core/account/activity.scala.html
@@ -4,7 +4,7 @@
@import gitbucket.core.view.helpers
@gitbucket.core.account.html.main(account, groupNames, "activity"){
  <div class="pull-right">
-    <a href="@context.path/@{account.userName}.atom"><img src="@{helpers.assets}/common/images/feed.png" alt="activities"></a>
+    <a href="@context.path/@{account.userName}.atom"><img src="@helpers.assets("/common/images/feed.png")" alt="activities"></a>
  </div>
  @gitbucket.core.helper.html.activities(activities)
 }
--- a/src/main/twirl/gitbucket/core/account/application.scala.html
+++ b/src/main/twirl/gitbucket/core/account/application.scala.html
@@ -2,7 +2,6 @@
  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){
    <div class="panel panel-default">
      <div class="panel-heading strong">Personal access tokens</div>
@@ -49,5 +48,4 @@
      </div>
    </form>
  }
-</div>
 }
--- a/src/main/twirl/gitbucket/core/account/edit.scala.html
+++ b/src/main/twirl/gitbucket/core/account/edit.scala.html
@@ -2,7 +2,6 @@
@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.helper.html.information(info)
    @gitbucket.core.helper.html.error(error)
@@ -61,7 +60,6 @@
      </div>
    </form>
  }
-</div>
 }
 <script>
 $(function(){
--- a/src/main/twirl/gitbucket/core/account/menu.scala.html
+++ b/src/main/twirl/gitbucket/core/account/menu.scala.html
@@ -2,21 +2,33 @@
 <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 class="menu-item-hover @if(active=="profile"){active}">
+        <a href="@context.path/@context.loginAccount.get.userName/_edit">
+          <i class="menu-icon octicon octicon-person"></i>
+          <span>Profile</span>
+        </a>
      </li>
      @if(ssh){
-      <li@if(active=="ssh"){ class="active"}>
-        <a href="@context.path/@context.loginAccount.get.userName/_ssh">SSH Keys</a>
+      <li class="menu-item-hover @if(active=="ssh"){active}">
+        <a href="@context.path/@context.loginAccount.get.userName/_ssh">
+          <i class="menu-icon octicon octicon-key"></i>
+          <span>SSH Keys</span>
+        </a>
      </li>
      }
-      <li@if(active=="application"){ class="active"}>
-        <a href="@context.path/@context.loginAccount.get.userName/_application">Applications</a>
+      <li class="menu-item-hover @if(active=="application"){active}">
+        <a href="@context.path/@context.loginAccount.get.userName/_application">
+          <i class="menu-icon octicon octicon-rocket"></i>
+          <span>Applications</span>
+        </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>
+          <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>
        }
      }
--- a/src/main/twirl/gitbucket/core/account/ssh.scala.html
+++ b/src/main/twirl/gitbucket/core/account/ssh.scala.html
@@ -1,7 +1,6 @@
@(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){
    <div class="panel panel-default">
      <div class="panel-heading strong">SSH Keys</div>
@@ -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/system.scala.html
+++ b/src/main/twirl/gitbucket/core/admin/system.scala.html
@@ -1,4 +1,5 @@
@(info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.util.DatabaseConfig
@gitbucket.core.html.main("System settings"){
  @gitbucket.core.admin.html.menu("system"){
    @gitbucket.core.helper.html.information(info)
@@ -20,7 +21,17 @@
            </tr>
            <tr>
              <td>DATABASE_URL</td>
-              <td>@gitbucket.core.util.DatabaseConfig.url</td>
+              @if(DatabaseConfig.url.startsWith("jdbc:h2:")) {
+              <td class="danger">
+                <p>@gitbucket.core.util.DatabaseConfig.url</p>
+                <p>
+                  Your GitBucket is running on embedded H2 database.
+                  Recommend to <a href="https://github.com/gitbucket/gitbucket/wiki/External-database-configuration">configure to use external database</a> if you would like to use GitBucket for important purpose.
+                </p>
+              </td>
+              }else{
+                <td>@gitbucket.core.util.DatabaseConfig.url</td>
+              }
            </tr>
          </table>
          <!--====================================================================-->
--- 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/src/main/twirl/gitbucket/core/dashboard/issueslist.scala.html
+++ b/src/main/twirl/gitbucket/core/dashboard/issueslist.scala.html
@@ -17,7 +17,7 @@
    </tr>
  </thead>
  <tbody>
-    @issues.map { case IssueInfo(issue, labels, milestone, commentCount, commitStatus) =>
+    @issues.map { case IssueInfo(issue, labels, milestone, priority, commentCount, commitStatus) =>
      <tr>
        <td style="padding-top: 12px; padding-bottom: 12px;">
          <a href="@context.path/@issue.userName/@issue.repositoryName">@issue.userName/@issue.repositoryName</a>&nbsp;&#xFF65;
--- a/src/main/twirl/gitbucket/core/dashboard/sidebar.scala.html
+++ b/src/main/twirl/gitbucket/core/dashboard/sidebar.scala.html
@@ -14,11 +14,11 @@
    } else {
      <li><form class="sidebar-form"><input type="text" id="filter-box" class="form-control input-sm" placeholder="Find repository"/></form></li>
      @userRepositories.zipWithIndex.map { case (repository, i) =>
-        <li class="repo-link">
+        <li class="menu-item-hover">
          @if(repository.owner == context.loginAccount.get.userName){
            <a href="@helpers.url(repository)">@gitbucket.core.helper.html.repositoryicon(repository, false) <span class="strong">@repository.name</span></a>
          } else {
-            <a href="@helpers.url(repository)">@gitbucket.core.helper.html.repositoryicon(repository, false) @repository.owner/<span class="strong">@repository.name</span></a>
+          <a href="@helpers.url(repository)">@gitbucket.core.helper.html.repositoryicon(repository, false) <span>@repository.owner/<span class="strong">@repository.name</span></span></a>
          }
        </li>
      }
@@ -30,8 +30,8 @@
    } else {
      <li><form class="sidebar-form"><input type="text" id="filter-box" class="form-control input-sm" placeholder="Find repository"/></form></li>
      @recentRepositories.zipWithIndex.map { case (repository, i) =>
-        <li class="repo-link">
-          <a href="@helpers.url(repository)">@gitbucket.core.helper.html.repositoryicon(repository, false) @repository.owner/<span class="strong">@repository.name</span></a>
+        <li class="menu-item-hover">
+          <a href="@helpers.url(repository)">@gitbucket.core.helper.html.repositoryicon(repository, false) <span>@repository.owner/<span class="strong">@repository.name</span></span></a>
        </li>
      }
    }
@@ -49,10 +49,7 @@ $(function(){
  $('#filter-box').keyup(function(){
    var inputVal = $('#filter-box').val();
    $.each($('li.repo-link a'), function(index, elem) {
-      console.log(inputVal);
-      console.log(elem.text.trim());
-      console.log(elem.text.trim().lastIndexOf(inputVal, 0));
-      if (!inputVal || !elem.text.trim() || elem.text.trim().indexOf(inputVal) >= 0) {
+      if ( !inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >= 0 ) {
        $(elem).parent().show();
      } else {
        $(elem).parent().hide();
--- a/src/main/twirl/gitbucket/core/helper/branchcontrol.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/branchcontrol.scala.html
@@ -31,7 +31,7 @@
    $('#branch-control-input').keyup(function() {
      var inputVal = $('#branch-control-input').val();
      $.each($('#branch-control-input').parent().parent().find('a'), function(index, elem) {
-        if (!inputVal || !elem.text.trim() || elem.text.trim().lastIndexOf(inputVal, 0) >= 0) {
+        if (!inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >= 0) {
          $(elem).parent().show();
        } else {
          $(elem).parent().hide();
--- a/src/main/twirl/gitbucket/core/helper/diff.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/diff.scala.html
@@ -18,7 +18,7 @@
  Showing <a href="javascript:void(0);" id="toggle-file-list">@diffs.size changed @helpers.plural(diffs.size, "file")</a>
  <ul id="commit-file-list" style="display: none;">
  @diffs.zipWithIndex.map { case (diff, i) =>
-    <li@if(i > 0){ class="border"}>
+    <li class="border">
      <span class="pull-right diffstat" data-diff-id="@i"></span>
      <a href="#diff-@i">
        @if(diff.changeType == ChangeType.COPY || diff.changeType == ChangeType.RENAME){
@@ -130,8 +130,8 @@
    </tr>
  </table>
 }
-<script type="text/javascript" src="@helpers.assets/vendors/jsdifflib/difflib.js"></script>
-<link href="@helpers.assets/vendors/jsdifflib/diffview.css" type="text/css" rel="stylesheet" />
+<script type="text/javascript" src="@helpers.assets("/vendors/jsdifflib/difflib.js")"></script>
+<link href="@helpers.assets("/vendors/jsdifflib/diffview.css")" type="text/css" rel="stylesheet" />
 <script>
 $(function(){
  @if(showIndex){
--- a/src/main/twirl/gitbucket/core/helper/dropdown.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/dropdown.scala.html
@@ -2,43 +2,45 @@
  prefix: String  = "",
  style : String  = "",
  right : Boolean = false,
-  filter: String = "")(body: Html)
-<div class="btn-group" @if(style.nonEmpty){style="@style"}>
-  <button
-      class="dropdown-toggle btn btn-default btn-sm" data-toggle="dropdown">
-    @if(value.isEmpty){
-      <i class="octicon octicon-gear"></i>
-    } else {
-      @if(prefix.nonEmpty){
-        <span class="muted">@prefix:</span>
-      }
-      <span class="strong">@value</span>
-    }
-    <span class="caret"></span>
-  </button>
-  <ul class="dropdown-menu@if(right){ pull-right}">
-    @if(filter.nonEmpty) {
-      <li><input id="@filter-input" type="text" class="form-control input-sm dropdown-filter-input" placeholder="Filter"/></li>
-    }
-    @body
-  </ul>
-</div>
-@if(filter.nonEmpty) {
-<script>
-$(function(){
-  $('#@{filter}-input').parent().click(function(e) {
-    e.stopPropagation();
-  });
-  $('#@{filter}-input').keyup(function() {
-    var inputVal = $('#@{filter}-input').val();
-    $.each($('#@{filter}-input').parent().parent().find('a'), function(index, elem) {
-      if (!inputVal || !elem.text.trim() || elem.text.trim().lastIndexOf(inputVal, 0) >= 0) {
-        $(elem).parent().show();
+  filter: (String, String)  = ("",""))(body: Html)
+@defining(if(filter._1.isEmpty) "" else filter._1 + "-" + scala.util.Random.alphanumeric.take(4).mkString){ filterId =>
+  <div class="btn-group" @if(style.nonEmpty){style="@style"}>
+    <button
+        class="dropdown-toggle btn btn-default btn-sm" data-toggle="dropdown">
+      @if(value.isEmpty){
+        <i class="octicon octicon-gear"></i>
      } else {
-        $(elem).parent().hide();
+        @if(prefix.nonEmpty){
+          <span class="muted">@prefix:</span>
+        }
+        <span class="strong">@value</span>
      }
+      <span class="caret"></span>
+    </button>
+    <ul class="dropdown-menu@if(right){ pull-right}">
+      @if(filterId.nonEmpty) {
+        <li><input id="@filterId-input" type="text" class="form-control input-sm dropdown-filter-input" placeholder="@filter._2"/></li>
+      }
+      @body
+    </ul>
+  </div>
+  @if(filterId.nonEmpty) {
+    <script>
+    $(window).load(function(){
+      $('#@{filterId}-input').parent().click(function(e) {
+        e.stopPropagation();
+      });
+      $('#@{filterId}-input').keyup(function() {
+        var inputVal = $('#@{filterId}-input').val();
+        $.each($('#@{filterId}-input').parent().parent().find('a'), function(index, elem) {
+          if ( !inputVal || !elem.text.trim() || elem.text.trim().toLowerCase().indexOf(inputVal.toLowerCase()) >=0 ) {
+            $(elem).parent().show();
+          } else {
+            $(elem).parent().hide();
+          }
+        });
+      });
    });
-  });
-});
-</script>
-}
+    </script>
+  }
+}
--- a/src/main/twirl/gitbucket/core/helper/preview.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/preview.scala.html
@@ -38,16 +38,17 @@
    </div>
  </div>
 </div>
-<link  href="@helpers.assets/vendors/google-code-prettify/prettify.css" type="text/css" rel="stylesheet"/>
-<script src="@helpers.assets/vendors/google-code-prettify/prettify.js"></script>
+<link  href="@helpers.assets("/vendors/google-code-prettify/prettify.css")" type="text/css" rel="stylesheet"/>
+<script src="@helpers.assets("/vendors/google-code-prettify/prettify.js")"></script>
 <script>
 $(function(){
  @if(elastic){
    $('#content@uid').elastic();
+    $('#content@uid').trigger('blur');
  }

  $('#preview@uid').click(function(){
-    $('#preview-area@uid').html('<img src="@helpers.assets/common/images/indicator.gif"> Previewing...');
+    $('#preview-area@uid').html('<img src="@helpers.assets("/common/images/indicator.gif")"> Previewing...');
    $.post('@helpers.url(repository)/_preview', {
      content          : $('#content@uid').val(),
      enableWikiLink   : @enableWikiLink,
--- a/src/main/twirl/gitbucket/core/index.scala.html
+++ b/src/main/twirl/gitbucket/core/index.scala.html
@@ -13,7 +13,7 @@
    @gitbucket.core.dashboard.html.tab()
    <div class="container">
      <div class="pull-right">
-        <a href="@context.path/activities.atom"><img src="@helpers.assets/common/images/feed.png" alt="activities"></a>
+        <a href="@context.path/activities.atom"><img src="@helpers.assets("/common/images/feed.png")" alt="activities"></a>
      </div>
      @gitbucket.core.helper.html.activities(activities)
    </div>
--- a/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
@@ -46,7 +46,9 @@
            } else {
              referenced the @issueOrPullRequest()
            }
-            @gitbucket.core.helper.html.datetimeago(comment.registeredDate)
+            <a href="@helpers.url(repository)/issues/@issue.get.issueId#comment-@comment.commentId">
+              @gitbucket.core.helper.html.datetimeago(comment.registeredDate)
+            </a>
          </span>
          @if(comment.action != "commit" && comment.action != "merge" && comment.action != "refer"
                && (isManageable || context.loginAccount.map(_.userName == comment.commentedUserName).getOrElse(false))){
--- a/src/main/twirl/gitbucket/core/issues/create.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/create.scala.html
@@ -1,5 +1,7 @@
@(collaborators: List[String],
  milestones: List[gitbucket.core.model.Milestone],
+  priorities: List[gitbucket.core.model.Priority],
+  defaultPriority: Option[gitbucket.core.model.Priority],
  labels: List[gitbucket.core.model.Label],
  isManageable: Boolean,
  content: String,
@@ -29,7 +31,7 @@
          </div>
        </div>
        <div class="col-md-3">
-          @gitbucket.core.issues.html.issueinfo(None, Nil, Nil, collaborators, milestones.map(x => (x, 0, 0)), labels, isManageable, repository)
+          @gitbucket.core.issues.html.issueinfo(None, Nil, Nil, collaborators, milestones.map(x => (x, 0, 0)), priorities, defaultPriority, labels, isManageable, repository)
        </div>
      </div>
    </form>
--- a/src/main/twirl/gitbucket/core/issues/issue.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/issue.scala.html
@@ -3,6 +3,7 @@
  issueLabels: List[gitbucket.core.model.Label],
  collaborators: List[String],
  milestones: List[(gitbucket.core.model.Milestone, Int, Int)],
+  priorities: List[gitbucket.core.model.Priority],
  labels: List[gitbucket.core.model.Label],
  isEditable: Boolean,
  isManageable: Boolean,
@@ -54,7 +55,7 @@
        @gitbucket.core.issues.html.commentform(issue, true, isEditable, isManageable, repository)
      </div>
      <div class="col-md-3">
-        @gitbucket.core.issues.html.issueinfo(Some(issue), comments, issueLabels, collaborators, milestones, labels, isManageable, repository)
+        @gitbucket.core.issues.html.issueinfo(Some(issue), comments, issueLabels, collaborators, milestones, priorities, None, labels, isManageable, repository)
      </div>
    </div>
  }
--- a/src/main/twirl/gitbucket/core/issues/issueinfo.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/issueinfo.scala.html
@@ -3,6 +3,8 @@
  issueLabels: List[gitbucket.core.model.Label],
  collaborators: List[String],
  milestones: List[(gitbucket.core.model.Milestone, Int, Int)],
+  priorities: List[gitbucket.core.model.Priority],
+  defaultPriority: Option[gitbucket.core.model.Priority],
  labels: List[gitbucket.core.model.Label],
  isManageable: Boolean,
  repository: gitbucket.core.service.RepositoryService.RepositoryInfo)(implicit context: gitbucket.core.controller.Context)
@@ -11,7 +13,7 @@
  <span class="muted small strong">Labels</span>
  @if(isManageable){
    <div class="pull-right">
-      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = "labels") {
+      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = ("labels", "Filter Labels")) {
        @labels.map { label =>
          <li>
            <a href="#" class="toggle-label" data-label-id="@label.labelId">
@@ -32,11 +34,45 @@
  @gitbucket.core.issues.html.labellist(issueLabels)
 </ul>
 <hr/>
+
+<div style="margin-bottom: 14px;">
+  <span class="muted small strong">Priority</span>
+  @if(isManageable){
+    <div class="pull-right">
+      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = ("priority", "Filter Priority")) {
+        <li><a href="javascript:void(0);" class="priority" data-id=""><i class="octicon octicon-x"></i> Clear priority</a></li>
+        @priorities.map { priority =>
+          <li>
+            <a href="javascript:void(0);" class="priority" data-id="@priority.priorityId" data-name="@priority.priorityName" data-color="#@priority.color" data-font-color="#@priority.fontColor"@if(!priority.description.isEmpty) { title="@priority.description.get" }>
+              @gitbucket.core.helper.html.checkicon(issue.flatMap(_.priorityId).orElse(defaultPriority.map(_.priorityId)).map(id => id == priority.priorityId).getOrElse(false))
+              <span class="label" style="background-color: #@priority.color;">&nbsp;</span>
+              @priority.priorityName
+            </a>
+          </li>
+        }
+      }
+    </div>
+  }
+</div>
+<span id="label-priority">
+  @issue.flatMap(_.priorityId).orElse(defaultPriority.map(_.priorityId)).map { priorityId =>
+    @priorities.collect { case priority if(priority.priorityId == priorityId) =>
+      <a class="issue-priority" style="background-color: #@priority.color; color: #@priority.fontColor;" href="@helpers.url(repository)/issues?priority=@helpers.urlEncode(priority.priorityName)&state=open"@if(!priority.description.isEmpty) { title="@priority.description.get" }>@priority.priorityName</a>
+    }
+  }.getOrElse {
+    <span class="muted small">No priority</span>
+  }
+</span>
+@if(issue.isEmpty){
+  <input type="hidden" name="priorityId" value="@defaultPriority.map(_.priorityId).map(_.toString).getOrElse("")"/>
+}
+<hr/>
+
 <div style="margin-bottom: 14px;">
  <span class="muted small strong">Milestone</span>
  @if(isManageable){
    <div class="pull-right">
-      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = "milestone") {
+      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = ("milestone", "Filter Milestone")) {
        <li><a href="javascript:void(0);" class="milestone" data-id=""><i class="octicon octicon-x"></i> Clear this milestone</a></li>
        @milestones.filter(_._1.closedDate.isEmpty).map { case (milestone, _, _) =>
          <li>
@@ -88,7 +124,7 @@
  <span class="muted small strong">Assignee</span>
  @if(isManageable){
    <div class="pull-right">
-      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = "assignee") {
+      @gitbucket.core.helper.html.dropdown("Edit", right = true, filter = ("assignee", "Filter Assignee")) {
        <li><a href="javascript:void(0);" class="assign" data-name=""><i class="octicon octicon-x"></i> Clear assignee</a></li>
        @collaborators.map { collaborator =>
          <li>
@@ -112,6 +148,9 @@
  <input type="hidden" name="assignedUserName" value=""/>
 }
@issue.map { issue =>
+  @gitbucket.core.plugin.PluginRegistry().getIssueSidebars.map { sidebar =>
+    @sidebar(issue, repository, context)
+  }
  <hr/>
  <div style="margin-bottom: 14px;">
    @defining((issue.openedUserName :: comments.map(_.commentedUserName)).distinct){ participants =>
@@ -149,6 +188,20 @@ $(function(){
    );
  });

+  $('a.priority').click(function(){
+    var priorityName = $(this).data('name');
+    var priorityId = $(this).data('id');
+    var description = $(this).attr('title');
+    var color = $(this).data('color');
+    var fontColor = $(this).data('font-color');
+    $.post('@helpers.url(repository)/issues/@issue.issueId/priority',
+      { priorityId: priorityId },
+      function(data){
+        displayPriority(priorityName, priorityId, description, color, fontColor);
+      }
+    );
+  });
+
  $('a.assign').click(function(){
    var $this = $(this);
    var userName = $this.data('name');
@@ -185,6 +238,16 @@ $(function(){
    $('input[name=milestoneId]').val(milestoneId);
  });

+  $('a.priority').click(function(){
+    var priorityName = $(this).data('name');
+    var priorityId = $(this).data('id');
+    var description = $(this).attr('title');
+    var color = $(this).data('color');
+    var fontColor = $(this).data('font-color');
+    displayPriority(priorityName, priorityId, description, color, fontColor);
+    $('input[name=priorityId]').val(priorityId);
+  });
+
  $('a.assign').click(function(){
    var $this = $(this);
    var userName = $this.data('name');
@@ -219,6 +282,23 @@ $(function(){
    }
  }

+  function displayPriority(priorityName, priorityId, description, color, fontColor){
+    $('a.priority i.octicon-check').removeClass('octicon-check');
+    if(priorityId == ''){
+      $('#label-priority').html($('<span class="muted small">').text('No priority'));
+    } else {
+      $('#label-priority').html($('<a class="issue-priority">').text(priorityName)
+        .attr('href', '@helpers.url(repository)/issues?priority=' + encodeURIComponent(priorityName) + '&state=open')
+        .attr('title', description)
+        .css({
+          "background-color": color,
+          "color": fontColor
+        }));
+
+      $('a.priority[data-id=' + priorityId + '] i').addClass('octicon-check');
+    }
+  }
+
  function displayAssignee($this, userName){
    $('a.assign i.octicon-check').removeClass('octicon-check');
    if(userName == ''){
--- a/src/main/twirl/gitbucket/core/issues/list.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/list.scala.html
@@ -3,6 +3,7 @@
  page: Int,
  collaborators: List[String],
  milestones: List[gitbucket.core.model.Milestone],
+  priorities: List[gitbucket.core.model.Priority],
  labels: List[gitbucket.core.model.Label],
  openCount: Int,
  closedCount: Int,
@@ -38,7 +39,7 @@
        }
      }
    </form>
-    @gitbucket.core.issues.html.listparts(target, issues, page, openCount, closedCount, condition, collaborators, milestones, labels, Some(repository), isManageable)
+    @gitbucket.core.issues.html.listparts(target, issues, page, openCount, closedCount, condition, collaborators, milestones, priorities, labels, Some(repository), isManageable)
    @if(isManageable){
      <form id="batcheditForm" method="POST">
        <input type="hidden" name="value"/>
@@ -51,6 +52,7 @@
@if(isManageable){
 <script>
 $(function(){
+  @*
  $('a.header-link').mouseover(function(e){
    var target = e.target;
    if(e.target.tagName != 'A'){
@@ -70,6 +72,7 @@ $(function(){
    $(target).children('img.header-icon-hover').css('display', 'none');
    $(target).children('img.header-icon'      ).css('display', 'inline');
  });
+  *@

  $('.table-issues input[type=checkbox]').change(function(){
    var all = $('.table-issues input[type=checkbox][value]');
@@ -117,6 +120,9 @@ $(function(){
  $('a.toggle-milestone').click(function(){
    submitBatchEdit('@helpers.url(repository)/issues/batchedit/milestone', $(this).data('id'));
  });
+  $('a.toggle-priority').click(function(){
+    submitBatchEdit('@helpers.url(repository)/issues/batchedit/priority', $(this).data('id'));
+  });
 });
 </script>
 }
--- a/src/main/twirl/gitbucket/core/issues/listparts.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/listparts.scala.html
@@ -6,6 +6,7 @@
  condition: gitbucket.core.service.IssuesService.IssueSearchCondition,
  collaborators: List[String] = Nil,
  milestones: List[gitbucket.core.model.Milestone] = Nil,
+  priorities: List[gitbucket.core.model.Priority] = Nil,
  labels: List[gitbucket.core.model.Label] = Nil,
  repository: Option[gitbucket.core.service.RepositoryService.RepositoryInfo] = None,
  isManageable: Boolean = false)(implicit context: gitbucket.core.controller.Context)
@@ -27,7 +28,7 @@
      <th style="background-color: #eee;">
        <input type="checkbox"/>
        <span id="table-issues-control">
-          @gitbucket.core.helper.html.dropdown("Author") {
+          @gitbucket.core.helper.html.dropdown("Author", filter = ("author", "Find Author...")) {
            @collaborators.map { collaborator =>
              <li>
                <a href="@condition.copy(author = (if(condition.author == Some(collaborator)) None else Some(collaborator))).toURL">
@@ -37,7 +38,7 @@
              </li>
            }
          }
-          @gitbucket.core.helper.html.dropdown("Label") {
+          @gitbucket.core.helper.html.dropdown("Label", filter = ("label", "Find Label...")) {
            @labels.map { label =>
              <li>
                <a href="@condition.copy(labels = (if(condition.labels.contains(label.labelName)) condition.labels - label.labelName else condition.labels + label.labelName)).toURL">
@@ -48,7 +49,23 @@
              </li>
            }
          }
-          @gitbucket.core.helper.html.dropdown("Milestone") {
+          @gitbucket.core.helper.html.dropdown("Priority", filter = ("priority", "Find Priority...")) {
+            <li>
+              <a href="@condition.copy(priority = (if(condition.priority == Some(None)) None else Some(None))).toURL">
+                @gitbucket.core.helper.html.checkicon(condition.priority == Some(None)) Issues with no priority
+              </a>
+            </li>
+            @priorities.map { priority =>
+              <li>
+                <a href="@condition.copy(priority = (if(condition.priority == Some(Some(priority.priorityName))) None else Some(Some(priority.priorityName)))).toURL"@if(!priority.description.isEmpty) { title="@priority.description.get" }>
+                  @gitbucket.core.helper.html.checkicon(condition.priority == Some(Some(priority.priorityName)))
+                  <span style="background-color: #@priority.color;" class="label-color">&nbsp;&nbsp;</span>
+                  @priority.priorityName
+                </a>
+              </li>
+            }
+          }
+          @gitbucket.core.helper.html.dropdown("Milestone", filter = ("milestone", "Find Milestone...")) {
            <li>
              <a href="@condition.copy(milestone = (if(condition.milestone == Some(None)) None else Some(None))).toURL">
                @gitbucket.core.helper.html.checkicon(condition.milestone == Some(None)) Issues with no milestone
@@ -62,7 +79,7 @@
              </li>
            }
          }
-          @gitbucket.core.helper.html.dropdown("Assignee") {
+          @gitbucket.core.helper.html.dropdown("Assignee", filter = ("assignee", "Find Assignee...")) {
            <li>
              <a href="@condition.copy(assigned = (if(condition.assigned == Some(None)) None else Some(None))).toURL">
                @gitbucket.core.helper.html.checkicon(condition.assigned == Some(None)) Assigned to nobody
@@ -88,6 +105,16 @@
                @gitbucket.core.helper.html.checkicon(condition.sort == "created"  && condition.direction == "asc") Oldest
              </a>
            </li>
+            <li>
+              <a href="@condition.copy(sort="priority", direction="asc").toURL">
+                @gitbucket.core.helper.html.checkicon(condition.sort == "priority"  && condition.direction == "asc") Highest priority
+              </a>
+            </li>
+            <li>
+              <a href="@condition.copy(sort="priority", direction="desc" ).toURL">
+                @gitbucket.core.helper.html.checkicon(condition.sort == "priority"  && condition.direction == "desc") Lowest priority
+              </a>
+            </li>
            <li>
              <a href="@condition.copy(sort="comments", direction="desc").toURL">
                @gitbucket.core.helper.html.checkicon(condition.sort == "comments"  && condition.direction == "desc") Most commented
@@ -116,7 +143,7 @@
              <li><a href="javascript:void(0);" class="toggle-state" data-id="open">Open</a></li>
              <li><a href="javascript:void(0);" class="toggle-state" data-id="close">Close</a></li>
            }
-            @gitbucket.core.helper.html.dropdown("Label") {
+            @gitbucket.core.helper.html.dropdown("Label", filter = ("label", "Find Label...")) {
              @labels.map { label =>
                <li>
                  <a href="javascript:void(0);" class="toggle-label" data-id="@label.labelId">
@@ -127,13 +154,21 @@
                </li>
              }
            }
-            @gitbucket.core.helper.html.dropdown("Milestone") {
+            @gitbucket.core.helper.html.dropdown("Priority", filter = ("priority", "Find Priority...")) {
+              <li><a href="javascript:void(0);" class="toggle-priority" data-id="">No priority</a></li>
+              @priorities.map { priority =>
+                <li><a href="javascript:void(0);" class="toggle-priority" data-id="@priority.priorityId"@if(!priority.description.isEmpty) { title="@priority.description.get" }>
+                  <span style="background-color: #@priority.color;" class="label">&nbsp;</span>
+                  @priority.priorityName</a></li>
+              }
+            }
+            @gitbucket.core.helper.html.dropdown("Milestone", filter = ("milestone", "Find Milestone...")) {
              <li><a href="javascript:void(0);" class="toggle-milestone" data-id="">No milestone</a></li>
              @milestones.filter(_.closedDate.isEmpty).map { milestone =>
                <li><a href="javascript:void(0);" class="toggle-milestone" data-id="@milestone.milestoneId">@milestone.title</a></li>
              }
            }
-            @gitbucket.core.helper.html.dropdown("Assignee") {
+            @gitbucket.core.helper.html.dropdown("Assignee", filter = ("assignee", "Find Assignee...")) {
              <li><a href="javascript:void(0);" class="toggle-assign" data-name=""><i class="octicon octicon-x"></i> Clear assignee</a></li>
              @collaborators.map { collaborator =>
                <li><a href="javascript:void(0);" class="toggle-assign" data-name="@collaborator"><i class="octicon"></i>@helpers.avatar(collaborator, 20) @collaborator</a></li>
@@ -171,7 +206,7 @@
        </td>
      </tr>
    }
-    @issues.map { case IssueInfo(issue, labels, milestone, commentCount, commitStatus) =>
+    @issues.map { case IssueInfo(issue, labels, milestone, priority, commentCount, commitStatus) =>
      <tr>
        <td style="padding-top: 12px; padding-bottom: 12px;">
          @if(isManageable){
@@ -208,6 +243,10 @@
          </span>
          <div class="small muted" style="margin-left: 12px; margin-top: 2px;">
            #@issue.issueId opened @gitbucket.core.helper.html.datetimeago(issue.registeredDate) by @helpers.user(issue.openedUserName, styleClass="username")
+            @priority.map(priority => priorities.filter(p => p.priorityName == priority).head).map { priority =>
+            <span style="margin: 20px;"><a href="@condition.copy(priority = Some(Some(priority.priorityName))).toURL" class="username"@if(!priority.description.isEmpty) { title="@priority.description.get" }><i class="octicon octicon-flame"></i>
+              <span class="issue-priority issue-priority-inline" style="background-color: #@priority.color; color: #@priority.fontColor;">@priority.priorityName</span></a></span>
+            }
            @milestone.map { milestone =>
              <span style="margin: 20px;"><a href="@condition.copy(milestone = Some(Some(milestone))).toURL" class="username"><i class="octicon octicon-milestone"></i> @milestone</a></span>
            }
--- a/src/main/twirl/gitbucket/core/issues/priorities/edit.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/priorities/edit.scala.html
@@ -0,0 +1,67 @@
+@(priority: Option[gitbucket.core.model.Priority],
+  repository: gitbucket.core.service.RepositoryService.RepositoryInfo)(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
+@defining(priority.map(_.priorityId).getOrElse("new")){ priorityId =>
+<div id="edit-priority-area-@priorityId">
+  <form class="form-inline">
+    <input type="text" id="priorityName-@priorityId" style="width: 300px; float: left; margin-right: 4px;" class="form-control" value="@priority.map(_.priorityName)"@if(priorityId == "new"){ placeholder="New priority name"}/>
+    <div id="priority-color-@priorityId" class="input-group color bscp" data-color="#@priority.map(_.color).getOrElse("888888")" data-color-format="hex" style="width: 100px; float: left;">
+      <input type="text" class="form-control" id="priorityColor-@priorityId" value="#@priority.map(_.color).getOrElse("888888")" style="width: 100px;">
+      <span class="input-group-addon"><i style="background-color: #@priority.map(_.color).getOrElse("888888");"></i></span>
+    </div>
+    <script>
+    $('div#priority-color-@priorityId').colorpicker({format: "hex"});
+    </script>
+    <input type="text" id="description-@priorityId" style="width: 500px; float: left; margin-left: 4px;" class="form-control" value="@priority.flatMap(_.description).getOrElse("")" placeholder="Description..." />
+    <span class="pull-right">
+      <span id="priority-error-@priorityId" class="error"></span>
+      <input type="button" id="cancel-@priorityId" class="btn btn-default priority-edit-cancel" value="Cancel">
+      <input type="button" id="submit-@priorityId" class="btn btn-success" style="margin-bottom: 0px;" value="@(if(priorityId == "new") "Create priority"  else "Save changes")"/>
+    </span>
+  </form>
+</div>
+<script>
+$(function(){
+  $('#submit-@priorityId').click(function(e){
+    $.post('@helpers.url(repository)/issues/priorities/@{if(priorityId == "new") "new" else priorityId + "/edit"}', {
+      'priorityName' : $('#priorityName-@priorityId').val(),
+      'description' : $('#description-@priorityId').val(),
+      'priorityColor': $('#priorityColor-@priorityId').val()
+    }, function(data, status){
+      $('div#edit-priority-area-@priorityId').remove();
+      @if(priorityId == "new"){
+        $('#new-priority-table').hide();
+        // Insert row into the top of table
+        $('#priorities-table tbody').append(data);
+      } else {
+        // Replace table row
+        $('#priority-row-@priorityId').after(data).remove();
+      }
+      $('#priority-no-priorities').hide();
+      updatePriorityCount();
+    }).fail(function(xhr, status, error){
+      var errors = JSON.parse(xhr.responseText);
+      if(errors.priorityName){
+        $('span#priority-error-@priorityId').text(errors.priorityName);
+      } else if(errors.description){
+        $('span#priority-error-@priorityId').text(errors.description);
+      } else if(errors.priorityColor){
+        $('span#priority-error-@priorityId').text(errors.priorityColor);
+      } else {
+        $('span#priority-error-@priorityId').text('error');
+      }
+    });
+    return false;
+  });
+
+  $('#cancel-@priorityId').click(function(e){
+    $('div#edit-priority-area-@priorityId').remove();
+    @if(priorityId == "new"){
+      $('#new-priority-table').hide();
+    } else {
+      $('#priority-@priorityId').show();
+    }
+  });
+});
+</script>
+}
--- a/src/main/twirl/gitbucket/core/issues/priorities/list.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/priorities/list.scala.html
@@ -0,0 +1,124 @@
+@(priorities: List[gitbucket.core.model.Priority],
+  counts: Map[String, Int],
+  repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  hasWritePermission: Boolean)(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
+@gitbucket.core.html.main(s"Priorities - ${repository.owner}/${repository.name}"){
+  @gitbucket.core.html.menu("priorities", repository){
+    @if(hasWritePermission){
+      <div class="pull-right" style="margin-bottom: 10px;">
+        <a class="btn btn-success" href="javascript:void(0);" id="new-priority-button">New priority</a>
+      </div>
+    }
+    <table class="table table-bordered table-hover table-issues" id="new-priority-table" style="display: none;">
+      <tr><td></td></tr>
+    </table>
+    <table id="priorities-table" class="table table-bordered table-hover table-issues">
+      <thead>
+        <tr id="priority-row-header">
+          <th style="background-color: #eee;">
+            <span class="small">@priorities.size priorities</span>
+          </th>
+        </tr>
+      </thead>
+      <tbody>
+        @priorities.map { priority =>
+          @gitbucket.core.issues.priorities.html.priority(priority, counts, repository, hasWritePermission)
+        }
+        <tr id="priority-no-priorities" @if(!priorities.isEmpty){ style="display:none" }>
+          <td style="padding: 20px; background-color: #eee; text-align: center;">
+            No priorities to show.
+            @if(hasWritePermission){
+              Click on the "New priority" button above to create one.
+            }
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  }
+}
+<script>
+$(function(){
+  $('#new-priority-button').click(function(e){
+    if($('#edit-priority-area-new').size() != 0){
+      $('div#edit-priority-area-new').remove();
+      $('#new-priority-table').hide();
+    } else {
+      $.get('@helpers.url(repository)/issues/priorities/new',
+        function(data){
+          $('#new-priority-table').show().find('tr td').append(data);
+        }
+      );
+    }
+  });
+  @if(hasWritePermission){
+    $('#priorities-table tbody').sortable({
+      axis: 'y',
+      cursor: 'move',
+      helper: function (e, ui) {
+        ui.children().each(function() {
+          $(this).width($(this).width());
+        });
+        return ui;
+      },
+      handle: '.priority-sort-handle',
+      update: function() {
+        var ids = [];
+        $('tr.priority-row').each(function(idx, elem) {
+          ids.push($(elem).attr('id').replace('priority-row-', ''));
+        });
+        $.post('@helpers.url(repository)/issues/priorities/reorder', {
+          'order' : ids.join(',')
+        }).fail(function(xhr, status, error){
+          alert('Unable to reorder priorities.');
+        });
+      }
+    });
+  }
+});
+
+function deletePriority(priorityId){
+  if(confirm('Once you delete this priority, there is no going back.\nAre you sure?')){
+    $.post('@helpers.url(repository)/issues/priorities/' + priorityId + '/delete', function(){
+      $('tr#priority-row-' + priorityId).remove();
+      if ($('tr.priority-row').size() == 0) {
+        $('#priority-no-priorities').show();
+      }
+      updatePriorityCount();
+    });
+  }
+}
+
+function editPriority(priorityId){
+  $.get('@helpers.url(repository)/issues/priorities/' + priorityId + '/edit',
+    function(data){
+      $('#priority-' + priorityId).hide().parent().append(data);
+    }
+  );
+}
+
+function updatePriorityCount() {
+  var $counter = $('#priority-row-header span');
+  $counter.text($counter.text().replace(/\d+/, $('tr.priority-row').size()));
+}
+
+function setDefaultPriority(priorityId){
+  var $a = $('a[data-id="' + priorityId + '"].priority-default');
+  var isDefault = $a.data('default');
+  $.post('@helpers.url(repository)/issues/priorities/default',
+    { priorityId: isDefault ? '' : priorityId },
+    function(){
+      $('.priority-default')
+        .removeClass('priority-default-selected')
+        .data('default', false)
+        .attr('title', 'Set as default');
+      if (!isDefault) {
+        $a
+          .addClass('priority-default-selected')
+          .data('default', true)
+          .attr('title', 'Unset as default');
+      }
+    }
+  );
+}
+</script>
--- a/src/main/twirl/gitbucket/core/issues/priorities/priority.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/priorities/priority.scala.html
@@ -0,0 +1,49 @@
+@(priority: gitbucket.core.model.Priority,
+  counts: Map[String, Int],
+  repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  hasWritePermission: Boolean)(implicit context: gitbucket.core.controller.Context)
+@import gitbucket.core.view.helpers
+<tr id="priority-row-@priority.priorityId" class="priority-row">
+  <td style="padding-top: 15px; padding-bottom: 15px;">
+    <div class="milestone row" id="priority-@priority.priorityId">
+      <div class="col-md-2">
+        @if(hasWritePermission) {
+        <div class="pull-left priority-sort-handle" style="margin-top: 3px"><i class="octicon octicon-grabber"></i></div>
+        }
+        <div style="margin-top: 6px">
+          <a href="@helpers.url(repository)/issues?priority=@helpers.urlEncode(priority.priorityName)&state=open" id="priority-row-content-@priority.priorityId">
+            <span style="background-color: #@priority.color; color: #@priority.fontColor; padding: 8px; font-size: 120%; border-radius: 4px;">
+              <i class="octicon octicon-flame" style="color: #@priority.fontColor;"></i>&nbsp;@priority.priorityName
+            </span>
+          </a>
+        </div>
+      </div>
+      <div class="@if(hasWritePermission){col-md-6} else {col-md-8}">
+        <span>@priority.description.getOrElse("")</span>
+      </div>
+      <div class="col-md-1">
+        <div class="pull-right">
+          @if(hasWritePermission){
+            <a href="javascript:void(0);" onclick="setDefaultPriority(@priority.priorityId)" data-id="@priority.priorityId" data-default="@priority.isDefault" class="priority-default@if(priority.isDefault){ priority-default-selected}" title="@if(priority.isDefault){Unset as default} else {Set as default}"><i class="octicon octicon-star"></i></a>
+          } else if(priority.isDefault) {
+            <i class="octicon octicon-star priority-default priority-default-selected" title="Default"></i>
+          }
+        </div>
+      </div>
+      <div class="col-md-1">
+        <div class="pull-right">
+          <span class="muted">@counts.get(priority.priorityName).getOrElse(0) open issues</span>
+        </div>
+      </div>
+      @if(hasWritePermission){
+        <div class="col-md-2">
+          <div class="pull-right">
+            <a href="javascript:void(0);" onclick="editPriority(@priority.priorityId)">Edit</a>
+            &nbsp;&nbsp;
+            <a href="javascript:void(0);" onclick="deletePriority(@priority.priorityId)">Delete</a>
+          </div>
+        </div>
+      }
+    </div>
+  </td>
+</tr>
--- a/src/main/twirl/gitbucket/core/main.scala.html
+++ b/src/main/twirl/gitbucket/core/main.scala.html
@@ -7,42 +7,46 @@
    <meta charset="utf-8">
    <title>@title</title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
-    <link rel="icon" href="@helpers.assets/common/images/gitbucket.png" type="image/vnd.microsoft.icon" />
+    <link rel="icon" href="@helpers.assets("/common/images/gitbucket.png")" type="image/vnd.microsoft.icon" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <link href="@helpers.assets/vendors/bootstrap-3.3.6/css/bootstrap.min.css" rel="stylesheet">
-    <link href="@helpers.assets/vendors/octicons-4.2.0/octicons.css" rel="stylesheet">
-    <link href="@helpers.assets/vendors/bootstrap-datetimepicker-4.17.44/css/bootstrap-datetimepicker.min.css" rel="stylesheet">
-    <link href="@helpers.assets/vendors/colorpicker/css/bootstrap-colorpicker.css" rel="stylesheet">
-    <link href="@helpers.assets/vendors/google-code-prettify/prettify.css" type="text/css" rel="stylesheet"/>
-    <link href="@helpers.assets/vendors/facebox/facebox.css" rel="stylesheet"/>
-    <link href="@helpers.assets/vendors/AdminLTE-2.3.8/css/AdminLTE.min.css" rel="stylesheet">
-    <link href="@helpers.assets/vendors/AdminLTE-2.3.8/css/skins/skin-blue.min.css" rel="stylesheet">
-    <link href="@helpers.assets/vendors/font-awesome-4.6.3/css/font-awesome.min.css" rel="stylesheet">
-    <link href="@helpers.assets/common/css/gitbucket.css" rel="stylesheet">
-    <script src="@helpers.assets/vendors/jquery/jquery-1.12.2.min.js"></script>
-    <script src="@helpers.assets/vendors/dropzone/dropzone.js"></script>
-    <script src="@helpers.assets/common/js/validation.js"></script>
-    <script src="@helpers.assets/common/js/gitbucket.js"></script>
-    <script src="@helpers.assets/vendors/bootstrap-3.3.6/js/bootstrap.js"></script>
-    <script src="@helpers.assets/vendors/bootstrap3-typeahead/bootstrap3-typeahead.js"></script>
-    <script src="@helpers.assets/vendors/bootstrap-datetimepicker-4.17.44/js/moment.min.js"></script>
-    <script src="@helpers.assets/vendors/bootstrap-datetimepicker-4.17.44/js/bootstrap-datetimepicker.min.js"></script>
-    <script src="@helpers.assets/vendors/colorpicker/js/bootstrap-colorpicker.js"></script>
-    <script src="@helpers.assets/vendors/google-code-prettify/prettify.js"></script>
-    <script src="@helpers.assets/vendors/elastic/jquery.elastic.source.js"></script>
-    <script src="@helpers.assets/vendors/facebox/facebox.js"></script>
-    <script src="@helpers.assets/vendors/jquery-hotkeys/jquery.hotkeys.js"></script>
-    <script src="@helpers.assets/vendors/jquery-textcomplete-1.6.2/jquery.textcomplete.js"></script>
+    <link href="@helpers.assets("/vendors/bootstrap-3.3.6/css/bootstrap.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/octicons-4.2.0/octicons.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/bootstrap-datetimepicker-4.17.44/css/bootstrap-datetimepicker.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/colorpicker/css/bootstrap-colorpicker.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/google-code-prettify/prettify.css")" type="text/css" rel="stylesheet"/>
+    <link href="@helpers.assets("/vendors/facebox/facebox.css")" rel="stylesheet"/>
+    <link href="@helpers.assets("/vendors/AdminLTE-2.3.8/css/AdminLTE.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/AdminLTE-2.3.8/css/skins/skin-blue.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/font-awesome-4.6.3/css/font-awesome.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/jquery-ui/jquery-ui.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/jquery-ui/jquery-ui.structure.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/vendors/jquery-ui/jquery-ui.theme.min.css")" rel="stylesheet">
+    <link href="@helpers.assets("/common/css/gitbucket.css")" rel="stylesheet">
+    <script src="@helpers.assets("/vendors/jquery/jquery-1.12.2.min.js")"></script>
+    <script src="@helpers.assets("/vendors/jquery-ui/jquery-ui.min.js")"></script>
+    <script src="@helpers.assets("/vendors/dropzone/dropzone.js")"></script>
+    <script src="@helpers.assets("/common/js/validation.js")"></script>
+    <script src="@helpers.assets("/common/js/gitbucket.js")"></script>
+    <script src="@helpers.assets("/vendors/bootstrap-3.3.6/js/bootstrap.js")"></script>
+    <script src="@helpers.assets("/vendors/bootstrap3-typeahead/bootstrap3-typeahead.js")"></script>
+    <script src="@helpers.assets("/vendors/bootstrap-datetimepicker-4.17.44/js/moment.min.js")"></script>
+    <script src="@helpers.assets("/vendors/bootstrap-datetimepicker-4.17.44/js/bootstrap-datetimepicker.min.js")"></script>
+    <script src="@helpers.assets("/vendors/colorpicker/js/bootstrap-colorpicker.js")"></script>
+    <script src="@helpers.assets("/vendors/google-code-prettify/prettify.js")"></script>
+    <script src="@helpers.assets("/vendors/elastic/jquery.elastic.source.js")"></script>
+    <script src="@helpers.assets("/vendors/facebox/facebox.js")"></script>
+    <script src="@helpers.assets("/vendors/jquery-hotkeys/jquery.hotkeys.js")"></script>
+    <script src="@helpers.assets("/vendors/jquery-textcomplete-1.6.2/jquery.textcomplete.js")"></script>
    @repository.map { repository =>
      <meta name="go-import" content="@context.baseUrl.replaceFirst("^https?://", "")/@repository.owner/@repository.name git @repository.httpUrl" />
    }
-    <script src="@helpers.assets/vendors/AdminLTE-2.3.8/js/app.js" type="text/javascript"></script>
+    <script src="@helpers.assets("/vendors/AdminLTE-2.3.8/js/app.js")" type="text/javascript"></script>
  </head>
-  <body class="skin-blue page-load @if(context.sidebarCollapse){sidebar-collapse}">
+  <body class="skin-blue page-load @if(body.toString.contains("menu-item-hover")){sidebar-mini} @if(context.sidebarCollapse){sidebar-collapse}">
    <div class="wrapper">
      <header class="main-header">
        <a href="@context.path/" class="logo">
-          <img src="@helpers.assets/common/images/gitbucket.png" style="width: 24px; height: 24px; display: inline;"/>
+          <img src="@helpers.assets("/common/images/gitbucket.png")" style="width: 24px; height: 24px; display: inline;"/>
          GitBucket
          <span class="header-version">@gitbucket.core.GitBucketCoreModule.getVersions.last.getVersion</span>
        </a>
@@ -72,26 +76,34 @@
          <div class="navbar-custom-menu">
            <ul class="nav navbar-nav">
              @if(context.loginAccount.isDefined){
-                <li class="dropdown">
+                <li class="dropdown notifications-menu">
                  <a class="dropdown-toggle menu" data-toggle="dropdown" href="#">
                    <i class="octicon octicon-plus" style="color: black;"></i><span class="caret" style="color: black; vertical-align: middle;"></span>
                  </a>
-                  <ul class="dropdown-menu pull-right">
-                    <li><a href="@context.path/new">New repository</a></li>
-                    <li><a href="@context.path/groups/new">New group</a></li>
+                  <ul class="dropdown-menu pull-right" style="width: auto;">
+                    <li>
+                      <ul class="menu">
+                        <li><a href="@context.path/new">New repository</a></li>
+                        <li><a href="@context.path/groups/new">New group</a></li>
+                      </ul>
+                    </li>
                  </ul>
                </li>
-                <li class="dropdown">
+                <li class="dropdown notifications-menu">
                  <a class="dropdown-toggle menu" data-toggle="dropdown" href="#" data-toggle="tooltip" data-placement="bottom" title="Signed is as @context.loginAccount.get.userName">
                    @helpers.avatar(context.loginAccount.get.userName, 16)<span class="caret" style="color: black; vertical-align: middle;"></span>
                  </a>
-                  <ul class="dropdown-menu pull-right">
-                    <li><a href="@helpers.url(context.loginAccount.get.userName)">Your profile</a></li>
-                    <li><a href="@helpers.url(context.loginAccount.get.userName)/_edit">Account settings</a></li>
-                    @if(context.loginAccount.get.isAdmin){
-                      <li><a href="@context.path/admin/users">System administration</a></li>
-                    }
-                    <li><a href="@context.path/signout">Sign out</a></li>
+                  <ul class="dropdown-menu pull-right" style="width: auto;">
+                    <li>
+                      <ul class="menu">
+                        <li><a href="@helpers.url(context.loginAccount.get.userName)">Your profile</a></li>
+                        <li><a href="@helpers.url(context.loginAccount.get.userName)/_edit">Account settings</a></li>
+                        @if(context.loginAccount.get.isAdmin){
+                          <li><a href="@context.path/admin/users">System administration</a></li>
+                        }
+                        <li><a href="@context.path/signout">Sign out</a></li>
+                      </ul>
+                    </li>
                  </ul>
                </li>
              } else {
--- a/src/main/twirl/gitbucket/core/menu.scala.html
+++ b/src/main/twirl/gitbucket/core/menu.scala.html
@@ -6,83 +6,91 @@
@import gitbucket.core.view.helpers

@menuitem(path: String, name: String, label: String, icon: String, count: Int = 0) = {
-  <li @if(active == name){class="active"}>
+  <li class = "menu-item-hover @if(active == name){active}">
    @if(path.startsWith("http")){
      <a href="@path" target="_blank">
-        <i class="menu-icon octicon octicon-@icon"></i> @label @if(count > 0) { <span class="label label-primary pull-right-container">@count</span> }
+        <i class="menu-icon octicon octicon-@icon"></i>
+        <span>@label</span>
+        @if(count > 0){
+          <span class="pull-right-container"><span class="label label-primary pull-right-container">@count</span></span>
+        }
      </a>
    } else {
      <a href="@helpers.url(repository)@path">
-        <i class="menu-icon octicon octicon-@icon"></i> @label @if(count > 0) { <span class="label label-primary pull-right-container">@count</span> }
+        <i class="menu-icon octicon octicon-@icon"></i>
+        <span>@label</span>
+        @if(count > 0) {
+          <span class="pull-right-container"><span class="label label-primary pull-right">@count</span></span>
+        }
      </a>
    }
  </li>
 }

-  <div class="main-sidebar">
-    <div class="sidebar">
-      <ul class="sidebar-menu">
-        @menuitem("", "files", "Files", "code")
-        @if(repository.branchList.nonEmpty) {
-          @menuitem("/branches", "branches", "Branches", "git-branch", repository.branchList.length)
-          @menuitem("/tags", "tags", "Tags", "tag", repository.tags.length)
+<div class="main-sidebar">
+  <div class="sidebar">
+    <ul class="sidebar-menu">
+      @menuitem("", "files", "Files", "code")
+      @if(repository.branchList.nonEmpty) {
+        @menuitem("/branches", "branches", "Branches", "git-branch", repository.branchList.length)
+        @menuitem("/tags", "tags", "Tags", "tag", repository.tags.length)
+      }
+      @if(repository.repository.options.issuesOption != "DISABLE") {
+        @menuitem("/issues", "issues", "Issues", "issue-opened", repository.issueCount)
+        @menuitem("/pulls", "pulls", "Pull requests", "git-pull-request", repository.pullCount)
+        @menuitem("/issues/labels", "labels", "Labels", "tag")
+        @menuitem("/issues/priorities", "priorities", "Priorities", "flame")
+        @menuitem("/issues/milestones", "milestones", "Milestones", "milestone")
+      } else {
+        @repository.repository.options.externalIssuesUrl.map { externalIssuesUrl =>
+          @menuitem(externalIssuesUrl, "issues", "Issues", "issue-opened")
        }
-        @if(repository.repository.options.issuesOption != "DISABLE") {
-          @menuitem("/issues", "issues", "Issues", "issue-opened", repository.issueCount)
-          @menuitem("/pulls", "pulls", "Pull requests", "git-pull-request", repository.pullCount)
-          @menuitem("/issues/labels", "labels", "Labels", "tag")
-          @menuitem("/issues/milestones", "milestones", "Milestones", "milestone")
-        } else {
-          @repository.repository.options.externalIssuesUrl.map { externalIssuesUrl =>
-            @menuitem(externalIssuesUrl, "issues", "Issues", "issue-opened")
-          }
+      }
+      @if(repository.repository.options.wikiOption != "DISABLE") {
+        @menuitem("/wiki", "wiki", "Wiki", "book")
+      } else {
+        @repository.repository.options.externalWikiUrl.map { externalWikiUrl =>
+          @menuitem(externalWikiUrl, "wiki", "Wiki", "book")
        }
-        @if(repository.repository.options.wikiOption != "DISABLE") {
-          @menuitem("/wiki", "wiki", "Wiki", "book")
-        } else {
-          @repository.repository.options.externalWikiUrl.map { externalWikiUrl =>
-            @menuitem(externalWikiUrl, "wiki", "Wiki", "book")
-          }
+      }
+      @if(repository.repository.options.allowFork) {
+        @menuitem("/network/members", "fork", "Forks", "repo-forked", repository.forkedCount)
+      }
+      @if(context.loginAccount.isDefined && (context.loginAccount.get.isAdmin || repository.managers.contains(context.loginAccount.get.userName))){
+        @menuitem("/settings", "settings", "Settings", "tools")
+      }
+      @gitbucket.core.plugin.PluginRegistry().getRepositoryMenus.map { menu =>
+        @menu(repository, context).map { link =>
+          @menuitem(link.path, link.id, link.label, link.icon.getOrElse("ruby"))
        }
-        @if(repository.repository.options.allowFork) {
-          @menuitem("/network/members", "fork", "Forks", "repo-forked", repository.forkedCount)
-        }
-        @if(context.loginAccount.isDefined && (context.loginAccount.get.isAdmin || repository.managers.contains(context.loginAccount.get.userName))){
-          @menuitem("/settings", "settings", "Settings", "tools")
-        }
-        @gitbucket.core.plugin.PluginRegistry().getRepositoryMenus.map { menu =>
-          @menu(repository, context).map { link =>
-            @menuitem(link.path, link.id, link.label, link.icon.getOrElse("ruby"))
-          }
-        }
-      </ul>
-    </div>
+      }
+    </ul>
  </div>
-  <div class="content-wrapper">
-    <div class="content body clearfix">
-      <div class="headbar">
-        <div class="container">
-          @gitbucket.core.helper.html.information(info)
-          @gitbucket.core.helper.html.error(error)
-          <div class="head">
-            @gitbucket.core.helper.html.repositoryicon(repository, true)
-            <a href="@helpers.url(repository.owner)">@repository.owner</a> / <a href="@helpers.url(repository)" class="strong">@repository.name</a>
+</div>
+<div class="content-wrapper">
+  <div class="content body clearfix">
+    <div class="headbar">
+      <div class="container">
+        @gitbucket.core.helper.html.information(info)
+        @gitbucket.core.helper.html.error(error)
+        <div class="head">
+          @gitbucket.core.helper.html.repositoryicon(repository, true)
+          <a href="@helpers.url(repository.owner)">@repository.owner</a> / <a href="@helpers.url(repository)" class="strong">@repository.name</a>

-            @defining(repository.repository){ x =>
-              @if(repository.repository.originRepositoryName.isDefined){
-                <div class="forked">
-                  forked from <a href="@context.path/@x.parentUserName/@x.parentRepositoryName">@x.parentUserName/@x.parentRepositoryName</a>
-                </div>
-              }
-              @x.description.map { description =>
-                <div class="normal muted" style="margin-left: 36px; font-size: 80%;">@Html(helpers.detectAndRenderLinks(description, repository))</div>
-              }
+          @defining(repository.repository){ x =>
+            @if(repository.repository.originRepositoryName.isDefined){
+              <div class="forked">
+                forked from <a href="@context.path/@x.parentUserName/@x.parentRepositoryName">@x.parentUserName/@x.parentRepositoryName</a>
+              </div>
            }
-          </div>
+            @x.description.map { description =>
+              <div class="normal muted" style="margin-left: 36px; font-size: 80%;">@Html(helpers.detectAndRenderLinks(description, repository))</div>
+            }
+          }
        </div>
      </div>
-      @body
    </div>
+    @body
  </div>
 </div>

--- a/src/main/twirl/gitbucket/core/pulls/compare.scala.html
+++ b/src/main/twirl/gitbucket/core/pulls/compare.scala.html
@@ -14,36 +14,37 @@
  hasOriginWritePermission: Boolean,
  collaborators: List[String],
  milestones: List[gitbucket.core.model.Milestone],
+  priorities: List[gitbucket.core.model.Priority],
  labels: List[gitbucket.core.model.Label])(implicit context: gitbucket.core.controller.Context)
@import gitbucket.core.view.helpers
@gitbucket.core.html.main(s"Pull requests - ${repository.owner}/${repository.name}", Some(repository)){
  @gitbucket.core.html.menu("pulls", repository){
    <div class="pullreq-info">
      <div id="compare-edit">
-        @gitbucket.core.helper.html.dropdown(originRepository.owner + "/" + originRepository.name, "base fork") {
+        @gitbucket.core.helper.html.dropdown(originRepository.owner + "/" + originRepository.name, "base fork", filter=("origin_repo", "Find Repository...")) {
          @members.map { case (owner, name) =>
            <li><a href="#" class="origin-owner" data-owner="@owner" data-name="@name">@gitbucket.core.helper.html.checkicon(owner == originRepository.owner) @owner/@name</a></li>
          }
        }
-        @gitbucket.core.helper.html.dropdown(originId, "base") {
+        @gitbucket.core.helper.html.dropdown(originId, "base", filter=("origin_branch", "Find Branch...")) {
          @originRepository.branchList.map { branch =>
            <li><a href="#" class="origin-branch" data-branch="@helpers.encodeRefName(branch)">@gitbucket.core.helper.html.checkicon(branch == originId) @branch</a></li>
          }
        }
        ...
-        @gitbucket.core.helper.html.dropdown(forkedRepository.owner + "/" + forkedRepository.name, "head fork") {
+        @gitbucket.core.helper.html.dropdown(forkedRepository.owner + "/" + forkedRepository.name, "head fork", filter=("forked_repo", "Find Repository...")) {
          @members.map { case (owner, name) =>
            <li><a href="#" class="forked-owner" data-owner="@owner" data-name="@name">@gitbucket.core.helper.html.checkicon(owner == forkedRepository.owner) @owner/@name</a></li>
          }
        }
-        @gitbucket.core.helper.html.dropdown(forkedId, "compare") {
+        @gitbucket.core.helper.html.dropdown(forkedId, "compare", filter=("forked_branch", "Find Branch...")) {
          @forkedRepository.branchList.map { branch =>
            <li><a href="#" class="forked-branch" data-branch="@helpers.encodeRefName(branch)">@gitbucket.core.helper.html.checkicon(branch == forkedId) @branch</a></li>
          }
        }
      </div>
      <div class="check-conflict" style="display: none;">
-        <img src="@helpers.assets/common/images/indicator.gif"/> Checking...
+        <img src="@helpers.assets("/common/images/indicator.gif")"/> Checking...
      </div>
    </div>
    @if(commits.nonEmpty && context.loginAccount.isDefined){
@@ -81,7 +82,7 @@
              </div>
            </div>
            <div class="col-md-3">
-              @gitbucket.core.issues.html.issueinfo(None, Nil, Nil, collaborators, milestones.map((_, 0, 0)), labels, hasOriginWritePermission, repository)
+              @gitbucket.core.issues.html.issueinfo(None, Nil, Nil, collaborators, milestones.map((_, 0, 0)), priorities, None, labels, hasOriginWritePermission, repository)
            </div>
          </div>
        </form>
--- a/src/main/twirl/gitbucket/core/pulls/conversation.scala.html
+++ b/src/main/twirl/gitbucket/core/pulls/conversation.scala.html
@@ -1,13 +1,17 @@
@(issue: gitbucket.core.model.Issue,
  pullreq: gitbucket.core.model.PullRequest,
+  commits: Seq[gitbucket.core.util.JGitUtil.CommitInfo],
  comments: List[gitbucket.core.model.Comment],
  issueLabels: List[gitbucket.core.model.Label],
  collaborators: List[String],
  milestones: List[(gitbucket.core.model.Milestone, Int, Int)],
+  priorities: List[gitbucket.core.model.Priority],
  labels: List[gitbucket.core.model.Label],
  isEditable: Boolean,
  isManageable: Boolean,
-  repository: gitbucket.core.service.RepositoryService.RepositoryInfo)(implicit context: gitbucket.core.controller.Context)
+  isManageableForkedRepository: Boolean,
+  repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  forkedRepository: Option[gitbucket.core.service.RepositoryService.RepositoryInfo])(implicit context: gitbucket.core.controller.Context)
@import gitbucket.core.view.helpers
 <div class="col-md-9">
  <div id="comment-list">
@@ -21,16 +25,16 @@
      <div class="check-conflict" style="display: none;">
        <div class="issue-comment-box" style="background-color: #fbeed5">
          <div class="box-content"class="issue-content" style="border: 1px solid #c09853; padding: 10px;">
-            <img src="@helpers.assets/common/images/indicator.gif"/> Checking...
+            <img src="@helpers.assets("/common/images/indicator.gif")"/> Checking...
          </div>
        </div>
      </div>
    }
-    @if(isManageable && issue.closed && pullreq.userName == pullreq.requestUserName && merged &&
-      pullreq.repositoryName == pullreq.requestRepositoryName && repository.branchList.contains(pullreq.requestBranch)){
+    @if(isManageableForkedRepository && issue.closed && merged &&
+      forkedRepository.map(r => (r.branchList.contains(pullreq.requestBranch) && r.repository.defaultBranch != pullreq.requestBranch)).getOrElse(false)){
      <div class="issue-comment-box" style="background-color: #d0eeff;">
        <div class="box-content"class="issue-content" style="border: 1px solid #87a8c9; padding: 10px;">
-          <a href="@helpers.url(repository)/pull/@issue.issueId/delete/@helpers.encodeRefName(pullreq.requestBranch)" class="btn btn-info pull-right delete-branch" data-name="@pullreq.requestBranch">Delete branch</a>
+          <a href="@helpers.url(repository)/pull/@issue.issueId/delete_branch" class="btn btn-info pull-right delete-branch" data-name="@pullreq.requestBranch">Delete branch</a>
          <div>
            <span class="strong">Pull request successfully merged and closed</span>
          </div>
@@ -42,25 +46,19 @@
  }
 </div>
 <div class="col-md-3">
-  @gitbucket.core.issues.html.issueinfo(Some(issue), comments, issueLabels, collaborators, milestones, labels, isManageable, repository)
+  @gitbucket.core.issues.html.issueinfo(Some(issue), comments, issueLabels, collaborators, milestones, priorities, None, labels, isManageable, repository)
 </div>
 <script>
 $(function(){
-  $('#cancel-merge-pull-request').click(function(){
-    $('#confirm-merge-form').hide();
-    $('#merge-pull-request').show();
+  @if(commits.nonEmpty){
+    var checkConflict = $('.check-conflict').show();
+    if(checkConflict.length){
+      $.get('@helpers.url(repository)/pull/@issue.issueId/mergeguide', function(data){ $('.check-conflict').html(data); });
+    }
+  }
+  $('.delete-branch').click(function(e){
+    var branchName = $(e.target).data('name');
+    return confirm('Are you sure you want to remove the ' + branchName + ' branch?');
  });
-
-  var checkConflict = $('.check-conflict').show();
-  if(checkConflict.length){
-    $.get('@helpers.url(repository)/pull/@issue.issueId/mergeguide', function(data){ $('.check-conflict').html(data); });
-  }
-
-  @if(isManageable){
-    $('.delete-branch').click(function(e){
-      var branchName = $(e.target).data('name');
-      return confirm('Are you sure you want to remove the ' + branchName + ' branch?');
-    });
-  }
 });
-</script>
+</script>
--- a/Show More
+++ b/Show More