Fixes #5220
Fixes #5392
Fixes atmos alert consoles for #5460
Added icons for slimes, golems and shadows as species.
Refactored gibbing and slipping for carbon mobs, entirely removed mutantrace var. This commit is only partial, following commits are contiguous to it (lol this is atomic right)
Fixes and tweaks to the previous.
Why in the dicks is slime code so HORRIBLE. Removes a very redundant piece of code in obj/item/attack() dealing with slimes.
Merge pull request #7510 from Zuhayr/mutantrace

Gibber fixes/refactor, mutantrace refactor, couple of small fixes.