Remove remaining direct references to the User model. Closes GitLab issue #225.

mayan/apps/ocr/tests/test_api.py

@@ -2,7 +2,7 @@ from __future__ import unicode_literals
 
 import json
 
-from django.contrib.auth.models import User
+from django.contrib.auth import get_user_model
 from django.core.files import File
 from django.core.urlresolvers import reverse
 
@@ -22,7 +22,7 @@ class OCRAPITestCase(APITestCase):
     """
 
     def setUp(self):
-        self.admin_user = User.objects.create_superuser(
+        self.admin_user = get_user_model().objects.create_superuser(
             username=TEST_ADMIN_USERNAME, email=TEST_ADMIN_EMAIL,
             password=TEST_ADMIN_PASSWORD
         )