Test against latest versions of Django.
Revert https://code.djangoproject.com/ticket/19758

django-authtools makes email addresses unique.

The bug #19758 tries not to leak emails through password reset because
only usernames are unique in Django's default user model.

django-authtools leaks email addresses through the registration form.
In the case of django-authtools not warning the user doesn't add any
security, and worsen user experience.
Test the Django 1.5 password reset behavior
Don't revert https://code.djangoproject.com/ticket/19758 by default
Docfix: Typo
Rename PasswordResetForm to FriendlyPasswordResetForm

PasswordResetForm could have been confused with the default
PasswordResetForm from django.contrib.auth
Expose friendly_password_reset view
Add custom tests for PasswordResetForm
gitignore the build/ directory
Merge branch 'revert-19758'