Fixing some message and sound.
Fixes many messages/sounds or lack thereof for different mobs.

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Nothing when Attack w/ item on dead animal
No varied attack verb for the above.
Item attack on alive SA/syndicate/melee: no sound
No Punchsound on alive and dead SA.
goat attack on SA/human/alien/monkey : no sound
attack_hand and Item attack on dying mouse: nothing
is_muzzled() fix in slime.dm and humanoid.dm and larva.dm and humanattac?kpaw.dm (put a muzzle on self, immune to monkey bites!)
monkey attack on animal: can't attack alive!
monkey (821) has attacked the grey baby slime (477)! (needs bite and sound)
monkey can't attack_paw alien/slime/animal with health below 0.
attack_animal on larva has no sound.
monkey bite on human: no sound
Larva on Humanoid/slime.
can't monkeybite a wounded alien.
larva needs to be attackable by humanoid/slime/hand/item/monkey/SA
Monkey cant bite dead/unconscious monkey
Larva bite has no sound. can't bite anyone but animals

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Merge pull request #4810 from phil235/Messagetypos

Fix many messages and sounds