Switching to OAuth2::Client and Token
Adding token persistence for authentication
Capturing successful external authentication

Given that the authentication provides an access token, I want to
capture that information for future interactions.
Replacing QA inner workings to use OAuth
Removing failing tests regarding new_with_session
Tidying up authentication test

There is a Warden callback that is firing.
Getting specs to pass

Now to rework HTTP authentication to use OAuth2 gem