Merge branch '5.2' into 5.3

diff --combined files/js/WCF.Conversation.js
index c0b1865d9584ee51b03839e3e62e83b85513f52e,f1b1dddda8d90d3986816b43734f54551e9e4009..1dac50553883f2b65e3377acb08ef05d28638d68
--- 1/files/js/WCF.Conversation.js
--- 2/files/js/WCF.Conversation.js
+++ b/files/js/WCF.Conversation.js
@@@ -1084,7 -1084,7 +1084,7 @@@ WCF.Conversation.Label.Manager = Class.
                
                // replace legends
                var $legend = WCF.Language.get('wcf.conversation.label.management.editLabel').replace(/#labelName#/, WCF.String.escapeHTML($label.text()));
-               $('#conversationLabelManagementForm').data('labelID', $label.data('labelID')).children('legend').html($legend);
+               $('#conversationLabelManagementForm').data('labelID', $label.data('labelID')).children('.sectionTitle').html($legend);
                
                // update text input
                $('#labelName').val($label.text()).trigger('keyup');
@@@ -1186,7 -1186,6 +1186,7 @@@
   * Provides a flexible conversation preview.
   * 
   * @see       WCF.Popover
 + * @deprecated  5.3     handled via `WoltLabSuite/Core/Controller/Popover`
   */
  WCF.Conversation.Preview = WCF.Popover.extend({
        /**