Fix avatar for anonymous users in secure pads

www/common/sframe-common-interface.js

@@ -214,12 +214,14 @@ define([
             var newName = myData.name;
             var url = myData.avatar;
             $displayName.text(newName || Messages.anonymous);
+            if (accountName) {
                 $avatar.html('');
                 UI.displayAvatar(Common, $avatar, url, newName, function ($img) {
                     if ($img) {
                         $userAdmin.find('button').addClass('avatar');
                     }
                 });
+            }
         };
         metadataMgr.onChange(updateButton);
         updateButton();