Remove minitest

The views I can hit expect specific information that I don't have.
Figuring out how to make it seems tedious.
I can't just subclass ActionController b/c the routes won't match up
I can't just fix the routes b/c rails is highly coupled.
So, we're going to switch to rspec, which provides tools to deal with this

I looked throught hem, and it appears that the existing tests were just auto-generated,
so nothing relevant lost.
Add rspec-rails
Authenticate with jsl-identity