Upgraded live.gnome.org to moin 1.8.6 (from 1.6.4)

[Olav Vitters <olav bkor dhs org>]

Editing some pages was a bit slow, so hoped the latest version would be
a bit quicker. Not sure if it really is.

The latest moin is 1.9.0. That one needs mod_wsgi. Didn't want to do too
major changes, so I used 1.8.6 instead.

Anyway, from 1.7.0 release:
http://moinmo.in/MoinMoinRelease1.7
# Notification / event framework
# Jabber notifications
# New authentication / session framework
# OpenID authentication 

Note: Above probably requires some config changes (especially the jabber
notification). Did not do anything aside from the minimal upgrade!