added `celery` and `djcelery` to the test INSTALLED_APPS setting
added `celery` and `djcelery` to the test INSTALLED_APPS setting

python-recsys/django-recommends,Eksmo/django-recommends,fcurella/django-recommends,python-recsys/django-recommends,Eksmo/django-recommends,fcurella/django-recommends