Fixed test urls.

see #1024

test_project/test_project/urls.py

@@ -1,6 +1,5 @@
-from django.conf.urls import patterns, include, url
+from django.conf.urls import include, url
 
-urlpatterns = patterns(
-    '',
+urlpatterns = [
     url(r'', include('modoboa.urls')),
-)
+]