Add categories overview

Resources/views/categories.html.twig

@@ -0,0 +1,9 @@
+{% extends '@ArdentParameter/layout.html.twig' %}
+
+
+{% block par_user_content %}
+    <h2>Parameter categories</h2><br>
+    {% for category in categories %}
+        <a class="btn-primary btn" href="{{ path('parameter_bundle_parameters', {category:category}) }}">{{ category }}</a><br><br>
+    {% endfor %}
+{% endblock %}

Resources/views/form.extra.html.twig

@@ -0,0 +1 @@
+{# Add extra content on the bottom of the form #}

Resources/views/form.html.twig

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