refactor: split the questionnaire into teamer and bus feedback

templates/forms.html.twig

@@ -173,6 +173,22 @@
     {%- endif -%}
 {%- endblock pickup_choice_widget -%}
 
+{#
+ # One questionnaire within a questionnaire form (App\Form\QuestionnaireType), which may hold
+ # several: its title, its description and its sections.
+ #}
+{%- block questionnaire_part_row -%}
+    <section class="pb-4">
+        <h2 class="text-2xl font-bold pb-2">{{ label }}</h2>
+        {%- if help is not empty -%}
+            <p class="pb-6 text-gray-700">{{ help|nl2br }}</p>
+        {%- endif -%}
+        {%- for child in form -%}
+            {{- form_row(child) -}}
+        {%- endfor -%}
+    </section>
+{%- endblock questionnaire_part_row -%}
+
 {#
  # A section of a questionnaire (App\Form\QuestionnaireType): its title and its questions. The
  # questions' rows carry data-question-key and, when conditional, data-show-if, which