Update cms urls for language preferences

common/djangoapps/lang_pref/tests/test_views.py

@@ -7,6 +7,7 @@ from student.tests.factories import UserFactory
 from user_api.models import UserPreference
 from lang_pref import LANGUAGE_KEY
 
+
 class TestLanguageSetting(TestCase):
     """
     Test setting languages

common/djangoapps/lang_pref/urls.py

@@ -2,7 +2,7 @@
 Urls for managing language preferences
 """
 
-from django.conf.urls import  patterns, url
+from django.conf.urls import patterns, url
 
 urlpatterns = patterns(
     '',

common/djangoapps/lang_pref/views.py

@@ -7,6 +7,7 @@ from django.http import HttpResponse, HttpResponseBadRequest
 from user_api.models import UserPreference
 from lang_pref import LANGUAGE_KEY
 
+
 @login_required
 def set_language(request):
     """