Forensics Datum (#17796)

* forensics datum initial work

* typo fix

* glove recursion fix

* missing bloodtype on organ data

* removed frustrating and unneeded b_type var from humans

* no leaky

* listcheck

* documenting

* documentation

code/modules/client/preference_setup/general/03_body.dm

@@ -175,7 +175,7 @@ var/const/preview_icons = 'icons/mob/human_races/preview.dmi'
 	character.h_style	= pref.h_style
 	character.f_style	= pref.f_style
 	character.grad_style= pref.grad_style
-	character.b_type	= pref.b_type
+	character.dna.b_type= pref.b_type
 	character.synth_color = pref.synth_color
 	character.synth_markings = pref.synth_markings
 	character.digitigrade = pref.digitigrade

code/modules/client/preferences.dm

@@ -21,7 +21,7 @@ var/list/preferences_datums = list()
 	//character preferences
 	var/real_name						//our character's name
 	var/nickname						//our character's nickname
-	var/b_type = "A+"					//blood type (not-chooseable)
+	var/b_type = DEFAULT_BLOOD_TYPE		//blood type (not-chooseable)
 	var/blood_reagents = "default"		//blood restoration reagents
 	var/headset = 1						//headset type
 	var/backbag = 2						//backpack type
@@ -455,7 +455,7 @@ var/list/preferences_datums = list()
 	character.grad_style= grad_style
 	character.f_style	= f_style
 	character.grad_style= grad_style
-	character.b_type	= b_type
+	character.dna.b_type= b_type
 	character.synth_color = synth_color
 
 	var/datum/preference/color/synth_color_color = GLOB.preference_entries[/datum/preference/color/human/synth_color]