Investigate Django Celery Results

[porowns]

https://docs.celeryproject.org/en/latest/django/first-steps-with-django.html#django-celery-results-using-the-django-orm-cache-as-a-result-backend

Kind of piggybacks of of #371. If users can view the tasks that failed, we could likely skip over that issue. Furthermore, we wouldn't have to do a complicated Flower setup and we could provide a small dashboard for viewing jobs easily.