SiteAuth
--------
Middleware that applies Apache-like access control.

Add ``siteauth.middleware.SiteAuthenticationMiddleware`` after
``django.contrib.auth.middleware.AuthenticationMiddleware`` in
your ``MIDDLEWARE_CLASSES`` tuple.

Below are the settings:

- ``SITEAUTH_ACCESS_ORDER`` - either ``allow/deny`` or ``deny/allow``
(default)
- ``SITEAUTH_ALLOW_URLS`` - a list of regexes that explicitly allows
non-athenticated access
- ``SITEAUTH_DENY_URLS`` - a list of regexes that explicitly denies
non-authenticated access
