Cleanup

Remove IntelliJ folder, remove mac spam, remove huge ass unneeded whiteline from Board, remove unneeded
colorWilderness, reorganize imports, use AsnycPlayerChatEvent instead of
PlayerChatEvent, use Material instead of item IDs, use double for damage
instead of int, remove unneeded SuppressWarnings annotiation and use
Bukkit directly instead of Bukkit.getServer() when getting player.