IPC will no longer take damage from walking in glass. Not sure why this was happening beforehand.

Conflicts:
	code/game/objects/items/stacks/sheets/glass.dm
Fix for previous commit.

Conflicts:
	code/game/objects/items/stacks/sheets/glass.dm
Attempting to stop IPC from eating and drinking.
Lousy goddamn indentation.
Adding some repair procs to cables and welders for IPC use.

Conflicts:
	code/modules/power/cable.dm
Fixes for previous commit, sigh.
Removed 'You are now sterile' line from groin loss due to spam issues when lost by an IPC as well as general pointlessness.
Several IPC adjustments.

Conflicts:
	code/modules/mob/living/carbon/human/human.dm