django-admin2 0.7.0

• Fix Django 1.8 issues and add 1.9, 1.10 compatibility
• Update django-rest-framework to 3.3.x
• Remove django-crispy-forms and django-floppyforms
• Regenerate example project to make it django 1.9 compatible
• Update tox and travis and add flake8
• Rename AdminModel2Mixin to Admin2ModelMixin
• Add migrations
• remove south migrations
• Replace IPAddressField with GenericIPAddressField
• Fix password link in user admin
• Fix user logout on password change
• Fix tests
• Drop support of django versions lower then 1.8
• Drop older url.patterns