zf-mvc-auth integration

- Adds integration with zf-mvc-auth -- an authentication.post listener that
  returns an ApiProblemReponse, and an authorization.post listener that does the
  same (different status).
Fix typo in method name

- so that, you know, we can actually do some bootstrap tasks...
Merge branch 'feature/mvc-auth-integration'

Adds integration with zfcampus/zf-mvc-auth; specifically, it now uses that
module, and adds listeners for the authentication.post and authorization.post
events that return ApiProblemResponse results.