add round duration to status reply

code/world.dm

@@ -116,6 +116,7 @@ var/world_topic_spam_protect_time = world.timeofday
 		// This is dumb, but spacestation13.com's banners break if player count isn't the 8th field of the reply, so... this has to go here.
 		s["players"] = 0
 		s["stationtime"] = worldtime2text()
+		s["roundduration"] = round_duration()
 
 		if(input["status"] == "2")
 			var/list/players = list()