port plugin to new passerelle django.apps support (#7515)

passerelle_montpellier_encombrants/__init__.py

@@ -14,12 +14,13 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from django.utils.translation import ugettext as _
+import django.apps
 
-class Plugin(object):
-    def get_apps(self):
-        return [__name__]
+class AppConfig(django.apps.AppConfig):
+    name = 'passerelle_montpellier_encombrants'
 
     def get_after_urls(self):
         from . import urls
         return urls.urlpatterns
+
+default_app_config = 'passerelle_montpellier_encombrants.AppConfig'