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
I did `git log master...master-ascraeus` (on phpbb3-website) and got this file https://gist.github.com/michaelcullum/32c36419fbea74e99f8d on which i ran some finds for `Merge: ` and `commit` and got those numbers. That's 3.0.12 vs 3.1.0-RC3.