Bugfixes

Fixes the damage_converter.dm symptom trying to heal robotic limbs
Adds some NEEDED sanity checks to attempt_initiate_surgery (certain human only procs were being called on monkeys/other mobs)
Removes the DME, God damn silly error
Fixes the DME Please...
Merge branch '30/11/2013-Toxic-Converter-Cyberlimb-Fix' of https://github.com/RobRichards1997/-tg-station into 30/11/2013-Toxic-Converter-Cyberlimb-Fix
Changes the heal proc to use get_damage twice instead of using the proc twice. - for Gia.
Merge branch 'master' of https://github.com/tgstation/-tg-station into Toxic_converter_Fix
<3 Aranclanos, You always know what's best.
Fixes it for Nonhuman mobs.
Fixes #2180 - Augmented limb healing issues
Merges Heal_Damage and Heal_robotic_damage procs
like I should have done in the first place.
Corrects all usages of Heal_damage so it works with the changed version.
Same goes for Heal_robotic_damage
Removes a Check by Aran's request
Merge pull request #1934 from RobRichards1997/30/11/2013-Toxic-Converter-Cyberlimb-Fix

Cyber limbs fixes [FIXES #1920] + [Fixes #2180] + [RUNTIME FIX]