Reverted int/long change, as Django's BigIntegerField can produce longs on Python 2
Reverted int/long change, as Django's BigIntegerField can produce longs on Python 2

chrisglass/django_polymorphic,skirsdeda/django_polymorphic,skirsdeda/django_polymorphic,chrisglass/django_polymorphic,skirsdeda/django_polymorphic