[Systems] wiki.sugarlabs.org upgraded to MW 1.22.2

[Bernie Innocenti]

I upgraded the main wiki to MediaWiki 1.22.2, which brings some new
user-visible features:

  http://www.mediawiki.org/wiki/Release_notes/1.22#MediaWiki_1.22.2

I also patched our OpenID plugin to allow creating new users, so if you
couldn't create an account in the past, please try again now and let us
know if you still have any issue.

Please accept my apologies on behalf of the Infrastructure Team for the
inconvenience. As you may know, some persistent spammers have been
vandalizing our wiki and even ReCaptcha doesn't seem to stop them.

-- 
Bernie Innocenti
Sugar Labs Infrastructure Team
http://wiki.sugarlabs.org/go/Infrastructure_Team