Add syntax highlight scheme to notes rendered client-side

app/assets/javascripts/notes.js.coffee

@@ -123,6 +123,7 @@ class @Notes
     if @isNewNote(note)
       @note_ids.push(note.id)
       $('ul.main-notes-list').append(note.html)
+      $('.js-syntax-highlight').syntaxHighlight()
       @initTaskList()
 
   ###

app/assets/javascripts/syntax_highlight.coffee

@@ -5,5 +5,8 @@
 #
 #   <div class="js-syntax-highlight"></div>
 #
+$.fn.syntaxHighlight = ->
+  $(this).addClass(gon.user_color_scheme)
+
 $(document).on 'ready page:load', ->
-  $('.js-syntax-highlight').addClass(gon.user_color_scheme)
+  $('.js-syntax-highlight').syntaxHighlight()