First big chunk of the refactor

mid-refactor of `take_overall_damage`

Fully refactors the (?:take|heal)_(?:overall|organ)_damage procs

Allows the dead to examine

Removes the `blinded` var

Refactor cyborg components so vision loss is instant

Robot life/death updates instantly

Adds instant updates for damage overlays and HUD icons for humans

Final reconciliation with the species refactor

Adds a stat debugging system and debugging logs

Also fixes instant death on species change

"Debugging logs" are used for stuff an admin wouldn't care about but
someone debugging would

I used it to fix people dying instantly when changing species due to
temporary deletion of the brain

Fox's requests

Adds a more careful updating system to our reagents system

code/modules/mob/dead/observer/observer.dm

@@ -12,7 +12,6 @@ var/list/image/ghost_darkness_images = list() //this is a list of images for thi
 	stat = DEAD
 	density = 0
 	canmove = 0
-	blinded = 0
 	anchored = 1	//  don't get pushed around
 	invisibility = INVISIBILITY_OBSERVER
 	var/can_reenter_corpse