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.
Replaces awful connect type system with bitflags
Slime Fix
- Adds missing slime sprites, eliminating the infamous invisible slime bug.
- Added sprites are taken from tgstation's code, and correspond with wiki entry.
Merge pull request #7514 from atlantiscze/slime-fix

Slime Fix
Merge pull request #7510 from Zuhayr/mutantrace

Gibber fixes/refactor, mutantrace refactor, couple of small fixes.
Merge pull request #7519 from Baystation12/master

Interbranch merge
Merge pull request #7516 from mwerezak/pipecleaner

Replaces connect type system
Fixes #5801
Fixes #5910
Fixes #7108
Merge branch 'dev-freeze' of https://github.com/Zuhayr/Baystation12 into dev-freeze