Add option for extra content (back button) on bottom of param form

Resources/views/form.html.twig

@@ -1,6 +1,8 @@
 {% extends '@ArdentParameter/layout.html.twig' %}
 
+
+
 {% block par_user_content %}
     {{ form(parameter_form) }}
-    <a class="btn btn-light" href="{{ path('all_parameters') }}">Back</a>
+    {% include '@ArdentParameter/form.extra.html.twig' %}
 {% endblock %}