affichage du boutton launch demo que sur home

src/Muzich/CoreBundle/Resources/views/Layout/side.html.twig

+{% if display_launch_demo is not defined %}
+  {% set display_launch_demo = false %}
+{% endif %}
+
 {% if app.user %}
   
   <div id="user_statusbox" class="nicebox">
     <a id="know_more" class="helpbox button" href="{{ path('helpbox_bootstrap', {'ressource_id':'know_more'}) }}" title="{{ 'help.know_more'|trans({}, 'navigationui') }}">
       {{ 'help.know_more'|trans({}, 'navigationui') }}
     </a>
-    <a id="launch_tour" class="button" href="#" title="{{ 'help.maunch_tour'|trans({}, 'navigationui') }}">
-      {{ 'help.launch_tour'|trans({}, 'navigationui') }}
-    </a>
+    {% if display_launch_demo %}
+      <a id="launch_tour" class="button" href="#" title="{{ 'help.maunch_tour'|trans({}, 'navigationui') }}">
+        {{ 'help.launch_tour'|trans({}, 'navigationui') }}
+      </a>
+    {% endif %}
   </div>
   
 {% endif %}

src/Muzich/HomeBundle/Controller/HomeController.php

       'search_form_name' => 'search',
       'network_public'   => $search_object->isNetworkPublic(),
       'elements'         => $elements,
-      'from_url'         => $this->getRequest()->get('from_url')
+      'from_url'         => $this->getRequest()->get('from_url'),
+      'display_launch_demo' => true
     );
   }