add possibility to generate filter/order elements, with only search box

for now

src/Bundle/ChillMainBundle/Resources/views/CRUD/_index.html.twig

@@ -4,6 +4,12 @@
 <h1>{{ ('crud.' ~ crud_name ~ '.index.title')|trans({'%crud_name%': crud_name}) }}</h1>
 {% endblock index_header %}
 
+{% block filter_order %}
+    {% if filter_order is not null %}
+        {{ filter_order|chill_render_filter_order_helper }}
+    {% endif %}
+{% endblock %}
+
 {% if entities|length == 0 %}
     {% block no_existing_entities %}
     <p>{{ no_existing_entities_sentences|default('No entities')|trans }}</p>