Minor Changes

Cleaned up the code for placing Vanilla doors on rifts in
EventHookContainer. Unfortunately, there's a section that I don't
understand and that I feel has a bug. Remember that comments are very
helpful.
Added More Dungeons

Added Cere-JumpPass, Cere-TransferTunnel, Cere-GreatHall,
SK-WatchedForkLeft, and SK-WatchedForkRight. Made a minor change to
SK-RaceTheLight.