cleaning up main landing page, and linking back to the official site www.advancedstudyroom.com
Merge branch 'master' of github.com:andrewhl/AdvancedStudyRoom

* 'master' of github.com:andrewhl/AdvancedStudyRoom:
  add support to destroy matches in development mode
  remove the rest of unused match annotations
  add archives link and sort leagues in events#leagues
  sort leagues in sidebar chronologically
  add support for deleting registrations in assign players page
  destroy matches when destroying a registration and destroy points when destroying a match
  remove old commented code
  update match annotation