Removed too complex FollowRequest model, we now use an aproved field on Follow

api/funkwhale_api/federation/activity.py

api/funkwhale_api/federation/actors.py

api/funkwhale_api/federation/admin.py

api/funkwhale_api/federation/factories.py

api/funkwhale_api/federation/library.py

...hale_api/federation/migrations/0004_auto_20180410_1624.py

api/funkwhale_api/federation/models.py

api/funkwhale_api/federation/serializers.py

api/funkwhale_api/federation/views.py

api/tests/federation/test_activity.py

api/tests/federation/test_actors.py

api/tests/federation/test_models.py

api/tests/federation/test_serializers.py

api/tests/federation/test_views.py