PLAT-1408: Import csrf from new path.

common/djangoapps/student/views.py

@@ -20,7 +20,7 @@ from django.contrib.auth.decorators import login_required
 from django.contrib.auth.models import AnonymousUser, User
 from django.contrib.auth.views import password_reset_confirm
 from django.core import mail
-from django.core.context_processors import csrf
+from django.template.context_processors import csrf
 from django.core.exceptions import ObjectDoesNotExist, PermissionDenied
 from django.core.urlresolvers import NoReverseMatch, reverse, reverse_lazy
 from django.core.validators import ValidationError, validate_email