Automatically try to login to the wiki

When you visit the wiki you're presented with a page that says "You are not authorized..." and then you have to click a link to login.

If I click the link after a few seconds I'm logged in without having to do any work (assuming that I logged into the site previously).

Instead of showing the "you are not authorized..." page it should say, "please wait while you are authenticated..." and then whatever happens when the login link is clicked should happen. I thin kdisplaying a "please wait..." dialog like this should be shown for at least a brief moment to ensure that people know that they're being authenticated. It's not critical but failing to do this may produce a string of bug reports where people think the wiki is unsecured.

If the login fails, maybe because the user is not in the right launchpad group, a different error message should show (and similiarly automatically logging in should not be attempted which would likely cause a redirect loop. Likewise if the user is logged in but because of an ACL does not have access to the current page there should not be an automated login attempt.