Bug 1372640 - Add django-filters to INSTALLED_APPS (#2575)
Bug 1372640 - Add django-filters to INSTALLED_APPS (#2575)

The jobdetail browsable API pages were returning HTTP 500 since as of
carltongibson/django-filter#580 it's necessary to add django-filter to
INSTALLED_APPS:
https://django-filter.readthedocs.io/en/latest/guide/install.html
tojonmz/treeherder,edmorley/treeherder,KWierso/treeherder,edmorley/treeherder,edmorley/treeherder,tojon/treeherder,KWierso/treeherder,tojonmz/treeherder,tojonmz/treeherder,KWierso/treeherder,tojon/treeherder,edmorley/treeherder,tojonmz/treeherder,KWierso/treeherder,tojon/treeherder,tojon/treeherder,tojonmz/treeherder,tojonmz/treeherder