/LoginController: AuthKit based controller with built-in cookies storage
/BaseController: The "core" mix-in class itself is usable as a stand-alone WSGI application
/WSGIController: Elemental parent class derived from BaseController
/SessionController: WSGIController based class for HTTP session management with Beaker (experimental)
/SchevoController: A BaseController extension providing a Schevo db object in request.environ.