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
`project = phpBB3 AND fixVersion > 3.1.0-dev AND NOT fixVersion <= 3.0.12 AND resolution in (Closed, Fixed, Resolved)` produces the number of changes. the number of fixed bugs is 944 `project = phpBB3 AND fixVersion > 3.1.0-dev AND NOT fixVersion <= 3.0.12 AND resolution in (Closed, Fixed, Resolved) AND type = Bug`. These stats will need regenerating on announcing  this page and announcing the release.