promises simplified

frontend-js/src/main/js/map/overlay/CommentDbOverlay.js

@@ -20,7 +20,7 @@ CommentDbOverlay.prototype.refresh = function() {
   var self = this;
   return ServerConnector.getLightComments({}).then(function(comments) {
     self._elements = comments;
-    resolve(self._elements);
+    return self._elements;
   });
 };