Fix awful typo
Add Friendly Fire permission for parties
This removes the friendly fire config option previously created
Both attacker and defender must have this option

Closes #648
Cancel EntityTargetEvent for when an entity wishes to target a party member without the friendly fire permission being enabled for both.
Not sure this can happen except for when an entity is made agressive to a player, then friendly fire is removed later and the player returns in range of the agressive tamed entity.

Thought: Move the permissions check for friendly fire into isFriendlyPet?  Not sure where else this is used, but if we always do a permissions check for friendly fire afterwards, it would make sense to move that check.