bug fix (variable inconnu)

src/Muzich/CoreBundle/Tests/Controller/HomeControllerTest.php

       'http://www.youtube.com/watch?v=WC8qb_of04E', 
       array($hardtek->getId(), $tribe->getId())
     );
-    
     $this->isResponseSuccess();
         
     $this->notExist('li:contains("Mon bel element a4er563a1r")');

src/Muzich/HomeBundle/Resources/views/Home/index.html.twig

 {% extends "MuzichHomeBundle::layout.html.twig" %}
 
+{% if login is not defined %}
+  {% set login = false %}
+{% endif %}
+
 {% block title %}{{ 'title.home'|trans({}, 'userui') }}{% endblock %}
 {% block mainbox_classes %}mainbox_margintop mainbox_nopadding{% endblock %}