Changes checks for zlevel 1 to map.zMainStation (#11379)

* Changes checks for zlevel 1 to map.zMainStation

* Replace all hard z-level checks with checks from _map.dm

* Hey look at all this manual z assignment (basically none)

* Whoops

* nanouwhy

* aaaa

* w h y

code/modules/admin/admin.dm

@@ -1128,7 +1128,7 @@ var/global/floorIsLava = 0
 	set category = "Admin"
 	set name = "Unprison"
 
-	if (M.z == 2)
+	if (M.z == map.zCentcomm)
 		if (config.allow_admin_jump)
 			M.loc = pick(latejoin)
 			message_admins("[key_name_admin(usr)] has unprisoned [key_name_admin(M)]", 1)
@@ -1197,7 +1197,7 @@ var/global/floorIsLava = 0
 		if(3)
 			var/count = 0
 			for(var/mob/living/carbon/monkey/Monkey in world)
-				if(Monkey.z == 1)
+				if(Monkey.z == map.zMainStation)
 					count++
 			return "Kill all [count] of the monkeys on the station"
 		if(4)