Added Gedmo stuff, fix translations (#117)

* Added Gedmo stuff, fix translations

* Add CSRF token validation across backoffice forms

- Added CSRF validations to candidate correction, penalty, answer saving, and elimination forms.
- Updated corresponding Twig templates to include CSRF token inputs.
- Adjusted column count in `tab_result` template to maintain layout consistency.

* Add unique index constraint for `quiz_candidate` with soft delete support

- Updated migration to include a unique index on `quiz_candidate` table that excludes soft-deleted records.
- Adjusted `QuizCandidate` entity to reflect the new unique constraint with `deleted_at` condition.

* Add CSRF token validation for quiz-related actions

- Added CSRF validation to `enableQuiz`, `clearQuiz`, `deleteQuiz`, `toggleCandidate`, and `prepareElimination` actions.
- Updated Twig templates to replace links with POST forms to include CSRF tokens.
- Set HTTP method restrictions for related endpoints to `POST`.

* Fix unique index condition for `quiz_candidate` with soft deletes

- Updated condition in unique index definition of `quiz_candidate` to add parentheses for clarity.
- Adjusted related migration to reflect the revised condition.

* Remove if for post an use methods in Route instead

* Refactor CSRF token validation in backoffice controllers

- Applied `#[IsCsrfTokenValid]` attribute for CSRF checks to simplify and standardize validation.
- Removed manual `isCsrfTokenValid` calls and associated exception throwing.
- Updated method signatures across affected endpoints to remove unnecessary `Request` dependency.
- Ensured consistency in route HTTP method restrictions where applicable.

* Add rector and phpstan

* Add validation for answering incorrect quiz question

- Added logic to prevent candidates from answering questions out of sequence in `QuizController`.
- Updated Dutch translations to include the new error message.

* Things

.idea/php.xml

@@ -203,6 +203,7 @@
       <path value="$PROJECT_DIR$/vendor/symfony/polyfill-php84" />
       <path value="$PROJECT_DIR$/vendor/symfony/polyfill-php85" />
       <path value="$PROJECT_DIR$/vendor/sebastian/git-state" />
+      <path value="$PROJECT_DIR$/vendor/ergebnis/agent-detector" />
     </include_path>
   </component>
   <component name="PhpInterpreters">