Add missing constant on django 1.8 testing.
Add missing constant on django 1.8 testing.

niwinz/django-jinja,akx/django-jinja,niwinz/django-jinja,glogiotatidis/django-jinja,akx/django-jinja,glogiotatidis/django-jinja,glogiotatidis/django-jinja,glogiotatidis/django-jinja,akx/django-jinja,akx/django-jinja,niwinz/django-jinja