Add a HandlerAssertionsMixin to djangae.test
Add a HandlerAssertionsMixin to djangae.test

* Supports tests to verify that specified handlers in app.yaml have a `login:required` or `login:admin` configuration.

grzes/djangae,grzes/djangae,grzes/djangae,kirberich/djangae,kirberich/djangae,potatolondon/djangae,kirberich/djangae,potatolondon/djangae