Ensure logouts clear the user cache.
Pedants are going to pedant

- We will now have our own Anonymous class.  Since there is a class
  check and we don't want to allow normal parent classes, I guess we
  will have to provide this
- Also fixed that mysterious appearance of having the g.mtj_user set
  despite logout was done.
Provide a default list of ACL front end pointers

- Point to where a provided endpoints on the front-end blueprint might
  provide the login/logout functions.
Turns out I did some things on my other machine...

- Yeah putting this project into hiatus too early is a little..

Merge branch 'local'

Conflicts:
	mtj/flask/acl/endpoint.py
	mtj/flask/acl/principal.py
	mtj/flask/acl/tests/test_user.py