changing url disables save button

frontend-js/src/main/js/gui/admin/AddPluginDialog.js

@@ -91,6 +91,10 @@ AddPluginDialog.prototype.createGui = function () {
   $(self.getElement()).on("click", "[name='validateUrl']", function () {
     return self.onValidateClicked().catch(GuiConnector.alert);
   });
+  $(self.getElement()).on("input", "[name='pluginUrl']", function () {
+    console.log("disable");
+    $('[name="savePlugin"]', self.getElement()).attr("disabled", true);
+  });
 
   return self.getElement().appendChild(result);
 };