Emergency Access Override Update

-Changed the way emergency access override is handled. It now toggles a var which overrides access requirements instead of removing/adding access
-Airlocks now have blinking amber lights when in emergency mode
-AIs can toggle emergency override on individual doors
-Humans may disable emergency overrides by pulsing the ID scanner wire. They can't enable it, since IMO there are enough methods to hack open doors without an easymode all-access wire
Inverted the blinking animation to reduce the flickering while the door closes and opens
Doors now have their own unique animation for their emergency lights

I also removed door1.dmi as it was unused and just had duplicate icons found in other files.
-Fixed overlay issues with a couple of doortypes due to different speeds in their opening animation.
-elights no longer blink while a door is bolted, mostly to prevent overlap of colors
Resolved Conflicts:
	code/modules/security levels/keycard authentication.dm
Merge pull request #3088 from Ikarrus/blinky

Emergency Access Override Update