Adds a Trait system (#4048)

* Works on trait system, wip.

* Finalizes traits.
Fixes a few bugs with medical machines assuming a max health of 100.

code/modules/organs/blood.dm

@@ -142,6 +142,16 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		//Bleeding out
 		var/blood_max = 0
 		var/blood_loss_divisor = 30	//lower factor = more blood loss
+
+		// Some modifiers can make bleeding better or worse.  Higher multiplers = more bleeding.
+		var/blood_loss_modifier_multiplier = 1.0
+		for(var/datum/modifier/M in modifiers)
+			if(!isnull(M.bleeding_rate_percent))
+				blood_loss_modifier_multiplier += (M.bleeding_rate_percent - 1.0)
+
+		blood_loss_divisor /= blood_loss_modifier_multiplier
+
+
 		//This 30 is the "baseline" of a cut in the "vital" regions (head and torso).
 		for(var/obj/item/organ/external/temp in bad_external_organs)
 			if(!(temp.status & ORGAN_BLEEDING) || (temp.robotic >= ORGAN_ROBOT))

code/modules/organs/internal/brain.dm

@@ -79,6 +79,11 @@
 		brainmob.dna = H.dna.Clone()
 		brainmob.timeofhostdeath = H.timeofdeath
 
+		// Copy modifiers.
+		for(var/datum/modifier/M in H.modifiers)
+			if(M.flags & MODIFIER_GENETIC)
+				brainmob.add_modifier(M.type)
+
 	if(H.mind)
 		H.mind.transfer_to(brainmob)