[black] Auto-reformat code

biscuit/core/anonymizers.py

biscuit/core/cronjobs.py

biscuit/core/decorators.py

biscuit/core/forms.py

biscuit/core/menus.py

biscuit/core/mixins.py

biscuit/core/models.py

biscuit/core/settings.py

biscuit/core/tests/browser/test_selenium.py

biscuit/core/tests/models/test_person.py

biscuit/core/tests/templatetags/test_data_helpers.py

biscuit/core/tests/views/test_account.py

biscuit/core/urls.py

biscuit/core/util/apps.py

biscuit/core/util/core_helpers.py

biscuit/core/util/messages.py

biscuit/core/views.py