(refs #775)Move isRenderable() to helpers from PluginRepository

src/main/scala/gitbucket/core/plugin/PluginRegistory.scala

@@ -109,10 +109,6 @@ object PluginRegistry {
    */
   def apply(): PluginRegistry = instance
 
-  def isRenderable(fileName: String): Boolean = {
-    instance.renderableExtensions.exists(extension => fileName.toLowerCase.endsWith("." + extension))
-  }
-
   /**
    * Initializes all installed plugins.
    */

src/main/scala/gitbucket/core/view/helpers.scala

@@ -106,6 +106,10 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
     renderer.render(RenderRequest(filePath, fileContent, branch, repository, enableWikiLink, enableRefsLink, context))
   }
 
+  def isRenderable(fileName: String): Boolean = {
+    PluginRegistry().renderableExtensions.exists(extension => fileName.toLowerCase.endsWith("." + extension))
+  }
+
   /**
    * Returns <img> which displays the avatar icon for the given user name.
    * This method looks up Gravatar if avatar icon has not been configured in user settings.

src/main/twirl/gitbucket/core/repo/blob.scala.html

@@ -7,7 +7,6 @@
   isBlame: Boolean)(implicit context: gitbucket.core.controller.Context)
 @import context._
 @import gitbucket.core.view.helpers._
-@import gitbucket.core.plugin.PluginRegistry
 @html.main(s"${repository.owner}/${repository.name}", Some(repository)) {
   @html.menu("code", repository){
     <div class="head">
@@ -76,7 +75,7 @@
       <tr>
         <td>
           @if(content.viewType == "text"){
-            @defining(PluginRegistry.isRenderable(pathList.reverse.head)){ isRrenderable =>
+            @defining(isRenderable(pathList.reverse.head)){ isRrenderable =>
               @if(!isBlame && isRrenderable) {
                 <div class="box-content markdown-body" style="border: none; padding-left: 16px; padding-right: 16px;">
                   @renderMarkup(pathList, content.content.get, branch, repository, false, false)

src/main/twirl/gitbucket/core/repo/editor.scala.html

@@ -5,7 +5,6 @@
   content: gitbucket.core.util.JGitUtil.ContentInfo)(implicit context: gitbucket.core.controller.Context)
 @import context._
 @import gitbucket.core.view.helpers._
-@import gitbucket.core.plugin.PluginRegistry
 @html.main(if(fileName.isEmpty) "New File" else s"Editing ${fileName.get} at ${branch} - ${repository.owner}/${repository.name}", Some(repository)) {
   @html.menu("code", repository){
     <form method="POST" action="@url(repository)/@if(fileName.isEmpty){create}else{update}" validate="true">
@@ -121,7 +120,7 @@ $(function(){
     $('#editor').hide();
     $('#preview').show()
 
-    @if(fileName.map(PluginRegistry.isRenderable _).getOrElse(false)) {
+    @if(fileName.map(isRenderable _).getOrElse(false)) {
       // update preview
       $('#preview').html('<img src="@assets/common/images/indicator.gif"> Previewing...');
       $.post('@url(repository)/_preview', {