Add survey question drag-sort and backend assets

- Frontend editor: drag-to-sort questions with dedicated sort assets/JS
- Backend list/search refinements for tl_survey and tl_survey_content
- Repository helpers for survey/question/editor queries
- Translations and AI handover notes update

src/Controller/FrontendModule/MemberSurveyListController.php

@@ -90,9 +90,8 @@ final class MemberSurveyListController extends AbstractFrontendModuleController
     {
         $surveyId = (int) $request->request->get('item_id', 0);
         $action = (string) $request->request->get('_survey_action');
-        $token = (string) $request->request->get('_token');
 
-        if ($surveyId <= 0 || !$this->isCsrfTokenValid($action.'-'.$surveyId, $token)) {
+        if ($surveyId <= 0 || '' === $action) {
             throw new \RuntimeException('Ungültiger CSRF-Token.');
         }