Update ro.coffee

Almost done.
The legal stuff is the most boring thing i ever had to translate...
Added 2.6.0-rc1 to allowed Mongo versions
Update ro.coffee
Merge pull request #509 from Darredevil/patch-7

Update ro.coffee
Added simple rank history graph. Improving ladder update mail.
Merge branch 'master' of https://github.com/codecombat/codecombat
Improved my-matches rank history and name fetching, ladder update emails, ladder update unsubscribes.
Inserted score history graph into ladder update emails.
Merge branch 'master' into production