Infested: Swarms and Spiders

Minor cleanup and tweaks.

• If a Mantis' attack target dies while it has the ambush effect, it will exit the ambush early. • Mantises will now regain health when killing any creature, not just arthropods. • Tamed Mantises will no longer take damage from their owners attacks while they are ambushing (and therefore invisible, making it hard for them to be seen.) • Tamed Mantises will have their health increased to 40 when they are tamed, like tamed wolves. • Tamed Spiders that have been given an Alchemy Spider skin can now be given a regular spider egg to clear the skin. • Minion mobs can no longer push their owner, meaning cases where they might push you around if you have many present, or they might push you off a block should no longer happen.