Fixed URL references (now "https://launchpad.net/compiz")

"http://www.compiz-fusion.org" is not existent anymore and leads one to the "Web Design Manchester" web design business page (used in the About dialogue of CCSM for example) and
"http://www.compiz.org" is outdated and does not reflect actual development of Compiz anymore. Approved by Daniel van Vugt, Sam Spilsbury.