Better config & perms, More commands, General cleanup

Adding/removing permissions now takes into account command sender's perms
Single player worlds automatically give player FinalWord perm level.
Added new command to get the perm level of a player
Seperated block id whitelist config, making it changable in-game and per-world
Abstracted jailing and unjailing from the commands in prep for banhammer and olive branch items
Removed locking from config tool. Shift right-click now clears it.

Fix: Confusing tooltip for Config tool
Fix: Commands sent from server showing messages twice
Jailing logged (optionally)

JailMan now getInstance rather than static