Issue sidebar bug fix.

Thanks @rspeicher.

app/controllers/projects/issues_controller.rb

@@ -98,9 +98,7 @@ class Projects::IssuesController < Projects::ApplicationController
       format.json do
         render json: {
           saved: @issue.valid?,
-          assignee_avatar_url: @issue.assignee.try(:avatar_url),
-          milestone: @issue.milestone.title,
-          labels: @issue.labels.pluck(:id,:title,:color)
+          assignee_avatar_url: @issue.assignee.try(:avatar_url)
         }
       end
     end

app/views/projects/issues/update.js.haml

-$('aside.right-sidebar')[0].outerHTML = "#{escape_javascript(render 'shared/issuable/sidebar', issuable: @issue)}");
-$('aside.right-sidebar').effect('highlight')
+$('aside.right-sidebar')[0].outerHTML = "#{escape_javascript(render 'shared/issuable/sidebar', issuable: @issue)}";
+$('aside.right-sidebar').effect('highlight');
 new Issue();
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