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

templates/backoffice/quiz/tab_candidates_list.html.twig

@@ -35,14 +35,16 @@
                     {% endif %}
                 </td>
                 <td>
-                    <a href="{{ path('tvdt_backoffice_toggle_candidate', {quiz: quiz.id, candidate: candidate.id}) }}"
-                       class="btn btn-sm btn-outline-secondary">
-                        {% if quizCandidate == null or quizCandidate.active %}
-                            {{ 'Deactivate'|trans }}
-                        {% else %}
-                            {{ 'Activate'|trans }}
-                        {% endif %}
-                    </a>
+                    <form action="{{ path('tvdt_backoffice_toggle_candidate', {quiz: quiz.id, candidate: candidate.id}) }}" method="POST">
+                        <input type="hidden" name="_token" value="{{ csrf_token('toggle_candidate') }}">
+                        <button type="submit" class="btn btn-sm btn-outline-secondary">
+                            {% if quizCandidate == null or quizCandidate.active %}
+                                {{ 'Deactivate'|trans }}
+                            {% else %}
+                                {{ 'Activate'|trans }}
+                            {% endif %}
+                        </button>
+                    </form>
                 </td>
             </tr>
         {% endfor %}