Constrain Django version to < 1.9
Constrain Django version to < 1.9

I suspect we won't be able to upgrade any of our projects to 1.9 for a
while since 1.9 doesn't support Python 3.3 (it really doesn't; I tried).

PSU-OIT-ARC/django-arcutils,wylee/django-arcutils,PSU-OIT-ARC/django-arcutils,wylee/django-arcutils