P2P Foundation:Mediawiki upgrade

Upgrade to 1.14.0

• images fixed
• logo fixed

• fix css, MediaWiki:Monobook.css doesn't really work
• sitesupport, probably related to MediaWiki:Sidebar
• privacy policy and disclaimer links in the bottom show html comment tags now

Side effects

• faster!
• some SEO: no-www, robots.txt and canonical hrefs
• favicon.ico
• upgrade to cc-by-nc-sa 3.0 - and nicer cc logo
• git version control

To be confirmed

• public XML dumps of articles
• OpenID extension