Removes most hard-coded z level checks

code/modules/computer3/computers/camera.dm

@@ -181,8 +181,7 @@
 
 	//proc/camera_list(var/datum/file/camnet_key/key)
 	get_machines(var/datum/file/camnet_key/key)
-		// TODO: Tie into space manager
-		if(!computer || computer.z > ZLEVEL_DERELICT)
+		if(!computer || !is_away_level(computer.z))
 			return null
 
 		var/list/L = list()

code/modules/computer3/computers/communications.dm

@@ -59,8 +59,7 @@
 	Topic(var/href, var/list/href_list)
 		if(!interactable() || !computer.radio || ..(href,href_list) )
 			return
-		// TODO: Tie into space manager
-		if(!(computer.z in config.station_levels))
+		if(!is_station_level(computer.z))
 			to_chat(usr, "<span class='danger'>Unable to establish a connection</span>: You're too far away from the station!")
 			return
 

code/modules/computer3/computers/law.dm

@@ -24,8 +24,7 @@
 
 
 	attackby(obj/item/weapon/aiModule/module as obj, mob/user as mob, params)
-		// TODO: Tie into space manager
-		if(user.z > ZLEVEL_DERELICT)
+		if(is_away_level(user.z))
 			to_chat(user, "<span class='danger'>Unable to establish a connection</span>: You're too far away from the station!")
 			return
 		if(istype(module, /obj/item/weapon/aiModule))

code/modules/computer3/computers/medical.dm

@@ -49,8 +49,7 @@
 		scan = computer.cardslot.reader
 		if(!interactable())
 			return
-		// TODO: Tie into space manager
-		if(computer.z > ZLEVEL_DERELICT)
+		if(is_away_level(computer.z))
 			to_chat(usr, "<span class='danger'>Unable to establish a connection</span>: You're too far away from the station!")
 			return
 		var/dat

code/modules/computer3/computers/prisoner.dm

@@ -43,8 +43,7 @@
 				if(!T.implanted) continue
 				var/loc_display = "Unknown"
 				var/mob/living/carbon/M = T.imp_in
-				// TODO: Tie into space manager
-				if(M.z == ZLEVEL_STATION && !istype(M.loc, /turf/space))
+				if(is_station_level(M.z) && !istype(M.loc, /turf/space))
 					var/turf/mob_loc = get_turf(M)
 					loc_display = mob_loc.loc
 				dat += "ID: [T.id] | Location: [loc_display]<BR>"

code/modules/computer3/computers/robot.dm

@@ -31,8 +31,7 @@
 
 
 	interact()
-		// TODO: Tie into space manager
-		if(!interactable() || computer.z > ZLEVEL_DERELICT)
+		if(!interactable() || is_away_level(computer.z))
 			return
 		var/dat
 		if(src.temp)

code/modules/computer3/computers/security.dm

@@ -57,8 +57,7 @@
 		if(!interactable())
 			return
 
-		// TODO: Tie into space manager
-		if(computer.z > ZLEVEL_DERELICT)
+		if(is_away_level(computer.z))
 			to_chat(usr, "<span class='danger'>Unable to establish a connection</span>: You're too far away from the station!")
 			return
 		var/dat