Fixes #7233.

Making sure the skills list is always initiated, even when not created as a player mob.
Fixes invisible slimes
Fixes #7213 restoring unarmed damage to previous values, adjusts unarmed attack logs.

Unarmed attack messages no longer assume every attack verb ends with -ed.
Merge pull request #7243 from mwerezak/h2h

Unarmed attacks
Merge pull request #7237 from PsiOmegaDelta/PunchTheKeysForGodsSake

Fixes #7233.
Merge pull request #7241 from GinjaNinja32/slimefix

Fixes invisible slimes.
Merge branch 'dev' of https://github.com/Baystation12/Baystation12 into dev-freeze