Added the following permissions (#527, #585, #627):

* edit_issue_notes: let user edit any notes
* edit_own_issue_notes: let user edit his own notes only

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1152 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/journals_controller.rb

@@ -22,11 +22,11 @@ class JournalsController < ApplicationController
   def edit
     if request.post?
       @journal.update_attributes(:notes => params[:notes]) if params[:notes]
+      @journal.destroy if @journal.details.empty? && @journal.notes.blank?
       respond_to do |format|
         format.html { redirect_to :controller => 'issues', :action => 'show', :id => @journal.journalized_id }
         format.js { render :action => 'update' }
       end
-      return
     end
   end