Merge branch 'Aufinal/admin_logout' into 'master'

Change le logout admin pour déconnecter de CAS

Redirige `/admin/logout` vers `/logout` pour déconnecter totalement
l'utilisateur.

fixes #47

See merge request !49

cof/urls.py

@@ -53,6 +53,7 @@ urlpatterns = patterns('',
     url(r'^autocomplete/registration$', 'gestioncof.autocomplete.autocomplete'),
     url(r'^autocomplete/', include('autocomplete_light.urls')),
     # Interface admin
+    url(r'^admin/logout/', 'gestioncof.views.logout'),
     url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
     url(r'^admin/(?P<app_label>[\d\w]+)/(?P<model_name>[\d\w]+)/csv/',
             'gestioncof.csv_views.admin_list_export',