django 3.2 compatibility: admin has a catch-all now, it must be last in urls (#74946)

Django 3.2 changelog:
The new admin catch-all view will break URL patterns routed after the admin URLs and matching the admin URL prefix. You can either adjust your URL ordering or, if necessary, set AdminSite.final_catch_all_view to False, disabling the catch-all view. See What’s new in Django 3.2 for more details.

eo_gestion/urls.py

@@ -32,6 +32,6 @@ urlpatterns = [
 ]
 
 if 'mellon' in settings.INSTALLED_APPS:
-    urlpatterns += [
+    urlpatterns = [
         url(r'^accounts/mellon/', include('mellon.urls')),
-    ]
+    ] + urlpatterns