Use Django's built-in autodiscover functionality
Use Django's built-in autodiscover functionality

It was factored out to make it reusable in Django ticket #21060: https://code.djangoproject.com/ticket/21060 , which is merged in all the Django versions we support, so we should use it.

YPlan/nexus,graingert/nexus,graingert/nexus,graingert/nexus,YPlan/nexus,YPlan/nexus