Revert "Revert "Fixes B9678""

This reverts commit dff42417

Das war doch nicht das Problem.

javascript/src/QfqForm.js

@@ -504,6 +504,7 @@ var QfqNS = QfqNS || {};
         }
     };
 
+    /* Dynamic Update Trigger */
     n.QfqForm.prototype.setupFormUpdateHandler = function () {
         $('textarea[data-load],input[data-load],select[data-load]').on('change', this.formUpdateHandler.bind(this));
     };