Added robotic hands and feet.

Apply screwdriver to robotic arms and legs to get hands/feet. They can
be surgically attached properly, far as I can tell. Also, fixed a few
backwards slashes in text marcos.
Added organ mutations.
Only have sprites for humans yet.
Added is_usable() proc that checks for both limb missing or being a tentacle
Finished up tentacle abominations.
Clone damage will cause body parts to mutate.
The more damage you have, the more chance to get a sweet tentacle.
Healing works other way, the less damage you have, the more chance to unmutate it.
Healing all the damage fixes everything.
Rest of mutant icons away.
yet another attempt to get admin rights was foiled.
CURSE YOU MLOC
Merge branch 'bleeding-edge-freeze' of https://github.com/Baystation12/Baystation12
Merge branch 'bleeding-edge-freeze' of https://github.com/Baystation12/Baystation12 into tentacles
Fixed indentation derp.
I guess it was a dream when I saw it compiling.
Wall Recharger Fix
- Oopsie. Sprites should work now when recharger is charging.
Adjusted event chance modifier based on last event.

Had the wrong numbers, basically every event would happen only once.
Resizes lobby manifest window
Chants changed to things less silly.
Merge branch 'bleeding-edge-freeze' into tentacles
Updated changelog
Merge branch 'bleeding-edge-freeze' of https://github.com/Baystation12/Baystation12 into bleeding-edge-freeze
Remembered to actually add to the changelog
Merge pull request #2858 from meyar/master

Meyars changelog
Merge pull request #2861 from fauxki/bleeding-edge-freeze

Wall Recharger Fix - bef
Forgot about airlock access
Merge pull request #2863 from meyar/master

Derp