Feature/launch page

Still a WIP as I need some input on the content and need to fix a minor issue or two

WEBSITE-1082
http://caniuse.com/#feat=rem Just IE8, in which case, put px in the ie8 compatibility file. We only have half support for IE8 anyway so I'm not fussed if it's broken and we'll drop IE8 support in 17 months anyway when MS do (http://www.techtimes.com/articles/12722/20140811/17-months-until-ie8-support-ends.htm).