Separated exportDungeon() from registerCustomDungeon() - exporting a
dungeon no longer automatically registers it. Also changed
exportDungeon() so that it returns a boolean indicating success or
failure, instead of an instance of DungeonGenerator that was never being
used. I modified CommandEndDungeonCreation so that it can warn you if
exporting the dungeon failed (if exportDungeon() returned false), and
also, to register the dungeon after it's exported since it's no longer
automatic.
61297c3a3a