used elementupdate in response if data is available

javascript/src/DragAndDrop.js

@@ -151,7 +151,6 @@ var QfqNS = QfqNS || {};
         if (dzSelector) {
             this.setDropZones($("." + dzSelector));
         }
-
     };
 
     n.DragAndDrop.prototype._dropHandler = function(event) {
@@ -256,7 +255,14 @@ var QfqNS = QfqNS || {};
             console.error(data.message);
         } else {
             console.log("status:" + data.status + " message: " + data.message);
+            if (data.elementUpdate) {
+                if (!this.elementUpdate) {
+                    this.elementUpdate = new n.ElementUpdate();
+                }
+                this.elementUpdate.updateAll(data.elementUpdate);
+            }
         }
     };
 
+
 })(QfqNS);
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