Set menu to active in the top navigation

Resources/views/standard_layout.html.twig

@@ -151,7 +151,7 @@ file that was distributed with this source code.
                                                         <ul class="dropdown-menu">
                                                             {% for admin in group.items %}
                                                                 {% if admin.hasroute('list') and admin.isGranted('LIST') %}
-                                                                    <li><a href="{{ admin.generateUrl('list')}}">{{ admin.label|trans({}, admin.translationdomain) }}</a></li>
+                                                                    <li{% if app.request.get('_sonata_admin') == admin.code %} class="active"{% endif %}><a href="{{ admin.generateUrl('list')}}">{{ admin.label|trans({}, admin.translationdomain) }}</a></li>
                                                                 {% endif %}
                                                             {% endfor %}
                                                         </ul>