Use .multiple-input-list instead global container for sorting

Author: bscheshirwork

src/renderers/BaseRenderer.php

@@ -431,7 +431,7 @@ private function registerJsSortable()
 
         // todo override when ListRenderer will use div markup
         $options = Json::encode($this->getJsSortableOptions());
-        $js = "$('#{$this->id}').sorting($options);";
+        $js = "$('#{$this->id} .multiple-input-list').sorting($options);";
         $view->registerJs($js);
     }