We've used the standard layout before which caused a automatic login.
Automatic because the browser saw our js/css <link> tags and accessed
the routes which in turn logged in the user, but only if there's a
enabled module which's configuration.php (or run.php) accesses the
Auth singleton. The stripped down layout provides its own js/css so
there's no need for our full-blown resources.
fixes#3583
jQuery is not available here because JavaScript is loaded after the content.
This was no problem before because the logout action was submitted using XHR and thus having JavaScript.
refs #8626
Provide a new settings authenticationMode and delegate the
authentication handling to the webserver when the external authentication mode
is set. Add a new view 'logout' that will be shown after logout from external
authentication as the regular redirect to login is not possible.
refs #5405
Johannes Meyer
Eric Lippmann
Marius Hein
Matthias Jentsch