Wiki down for maintenance

[Arran Cudbard-Bell]

Dear FreeRADIUS users,

The wiki will be going down for maintenance in approximately 10 minutes (8:50AM GMT), hope to have it back up within about 30 minutes. Please save any pages you're working on.

The downtime is to switch to a new branching structure to manage customisations, and to switch from the original omniauth hack to a sinatra module.

The modifications should fix the following issues:

* TOC displayed but sometimes jumps out of page flow (CSS bug)
* TOC not displayed in preview pages
* Authentication button images smushed into unreadable form in Firefox (CSS bug)
* 500 error, or exception when valid name field has not been sent from provider
* Logout button always kicks back to the home page (will now redirect back to the previous page)
  - Note:  if you're editing and you log out, you will be immediately prompted to log back in, this isn't a bug...
* Authentication process starts sooner when you attempt to create a page, it doesn't wait for you to attempt to save the page before prompting login.
* Possibly fixes the -_ whitespace substitution issues in page path

I'm also re-adding twitter now the source of the spam has been found.

-Arran