Makes DNA swapping methods more reliable

- Makes heads keep hair on removal
- Amputated limbs from a DNA-injected individual now will keep their
  appearance of the DNA-injected person
- Wounds will now vanish on their own now
- Admins now have an "incarnate" option on the player panel when viewing
  ghosts for quick player instantiation
- Fixes a runtime regarding failing a limb reconnection surgery
- Copying a client's preferences now overrides the previous mob's DNA

code/modules/admin/topic.dm

@@ -1523,6 +1523,14 @@
 
 		usr.client.cmd_admin_animalize(M)
 
+	else if(href_list["incarn_ghost"])
+		if(!check_rights(R_SPAWN)) return
+
+		var/mob/dead/observer/G = locate(href_list["incarn_ghost"])
+		if(!istype(G))
+			usr << "This will only work on /mob/dead/observer"
+		G.incarnate_ghost()
+
 	else if(href_list["togmutate"])
 		if(!check_rights(R_SPAWN))	return