Reduction of admin right-click verbs.

Removes verbs which only works on specific mob types from the admin right-click context.
Fixes #9627.
Fixes #9628.

code/modules/mob/living/carbon/human/human.dm

@@ -37,6 +37,7 @@
 	hud_list[SPECIALROLE_HUD] = image('icons/mob/hud.dmi', src, "hudblank")
 	hud_list[STATUS_HUD_OOC]  = image('icons/mob/hud.dmi', src, "hudhealthy")
 
+	human_mob_list |= src
 	..()
 
 	if(dna)
@@ -44,6 +45,7 @@
 	make_blood()
 
 /mob/living/carbon/human/Destroy()
+	human_mob_list -= src
 	for(var/organ in organs)
 		qdel(organ)
 	return ..()

code/modules/mob/living/silicon/silicon.dm

@@ -27,11 +27,13 @@
 	#define MED_HUD 2 //Medical HUD mode
 
 /mob/living/silicon/New()
+	silicon_mob_list |= src
 	..()
 	add_language("Galactic Common")
 	init_subsystems()
 
 /mob/living/silicon/Destroy()
+	silicon_mob_list -= src
 	for(var/datum/alarm_handler/AH in alarm_manager.all_handlers)
 		AH.unregister(src)
 	..()