Catch import error for UNUSABLE_PASSWORD in django 1.6
Merge pull request #9 from asfaltboy/django-1.6-support

Support for forms with Django 1.6
Merge pull request #10 from tarak/develop

Merging Develop
Merge pull request #11 from tarak/develop

PEP8 corrections.
Fixed exception in form PasswordPoliciesChangeForm.