Merge pull request #307

use new unittest.mock everywhere

Author: kennethlove

requirements.txt

@@ -1,6 +1,5 @@
 factory_boy
-mock
 pytest-django
 pytest-cov
 coverage
-django
+django

tests/test_ajax_mixins.py

@@ -1,5 +1,5 @@
 import json
-import mock
+from unittest import mock
 
 from django import test
 from django.core.exceptions import ImproperlyConfigured