Ports tgstation/-tg-station#16569, World Topic() changes

Full changes:
 - World Topic() is now standardized to use if("parameter" in topic_list)
   instead of an amalgamation of findtext() and if(topic == "parameter").
 - Comms password is now verified at the top of world/Topic() and sets a
   variable to true if it is present and correct.
 - "status" now returns extra information if the comms_password is
   provided and correct.

Misc changes:
 - Shuttle text has been standardized as a proc on mobile docking ports.
   This is used by status/supply displays and mob/Stat() for the -ETA- etc stuff.

code/modules/mob/mob.dm

@@ -995,28 +995,9 @@ var/list/slot_equipment_priority = list( \
 /mob/proc/show_stat_emergency_shuttle_eta()
 	var/obj/docking_port/mobile/emergency/E = shuttle_master.emergency
 
-	if(E.mode >= SHUTTLE_RECALL)
-		var/message = ""
-
-		var/timeleft = E.timeLeft()
-		message = "[add_zero(num2text((timeleft / 60) % 60),2)]:[add_zero(num2text(timeleft % 60), 2)]"
-
-		switch(E.mode)
-			if(SHUTTLE_RECALL, SHUTTLE_ESCAPE)
-				message = "ETR-[message]"
-			if(SHUTTLE_CALL)
-				message = "ETA-[message]"
-			if(SHUTTLE_DOCKED)
-				if(timeleft < 5)
-					message = "Departing..."
-				else
-					message = "ETD-[message]"
-			if(SHUTTLE_STRANDED)
-				message = "ETA-ERR"
-			if(SHUTTLE_ENDGAME)
-				return
-
-		stat(null, message)
+	var/ETA = shuttle_master.emergency.getModeStr()
+	if(ETA)
+		stat(null, "[ETA] [shuttle_master.emergency.getTimerStr()]")
 
 /mob/proc/add_stings_to_statpanel(var/list/stings)
 	for(var/obj/effect/proc_holder/changeling/S in stings)