Completed ZAS rework. Needs testing, and consideration to make zones sleep.

code/modules/admin/admin_verbs.dm

@@ -580,11 +580,11 @@ var/list/admin_verbs_mod = list(
 	set category = "Debug"
 	set name = "Kill Air"
 	set desc = "Toggle Air Processing"
-	if(kill_air)
-		kill_air = 0
+	if(air_processing_killed)
+		air_processing_killed = 0
 		usr << "<b>Enabled air processing.</b>"
 	else
-		kill_air = 1
+		air_processing_killed = 1
 		usr << "<b>Disabled air processing.</b>"
 	feedback_add_details("admin_verb","KA") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!
 	log_admin("[key_name(usr)] used 'kill air'.")