bunch of issues (#17900)

* bunch of issues

* .

* fix those properly

* safety else none at all

* .

* workaround for a byond bug

* .

* invis robot weapons

* light needs to be reset

* .

* use proper datums

* fix sorting here

* only store non vital

* .

* Update organ_external.dm

code/datums/forensics_crime.dm

@@ -103,6 +103,8 @@
 //////////////////////////////////////////////////////////////////////////////////////
 /// Adds hidden admin trackable fingerprints, visible even if normal fingerprints are smudged.
 /datum/forensics_crime/proc/add_hiddenprints(mob/living/M as mob)
+	if(!fingerprintshidden)
+		fingerprintshidden = list()
 	if(!ishuman(M))
 		if(fingerprintslast != M.key)
 			fingerprintshidden += text("\[[time_stamp()]\] (Non-human mob). Real name: [], Key: []",M.real_name, M.key)