A more strict dynamic room selection code, and fixed an incorrect area definition for the dynamic lobby south of customs.

code/game/area/Dynamic areas.dm

@@ -2,8 +2,9 @@
 	name = "dynamic area"
 	icon_state = "purple"
 	var/match_tag = "none"
-	var/width = -1
-	var/height = -1
+	var/match_width = -1
+	var/match_height = -1
+	var/enable_lights = 0
 
 /area/dynamic/destination // Do not use.
 	name = "dynamic area destination"
@@ -11,27 +12,27 @@
 /area/dynamic/destination/lobby
 	name = "Arrivals Lobby"
 	match_tag = "arrivals"
-	width = 5
-	height = 4
+	match_width = 5
+	match_height = 4
+	enable_lights = 1
 
 /area/dynamic/source // Do not use.
 	name = "dynamic area source"
-	var/lights_initially_on = 0
 
 /area/dynamic/source/lobby_bar
 	name = "\improper Bar"
 	match_tag = "arrivals"
-	width = 5
-	height = 4
+	match_width = 5
+	match_height = 4
 
 /area/dynamic/source/lobby_russian
 	name = "\improper Russian Lounge"
 	match_tag = "arrivals"
-	width = 5
-	height = 4
+	match_width = 5
+	match_height = 4
 
 /area/dynamic/source/lobby_disco
 	name = "\improper Disco Lounge"
 	match_tag = "arrivals"
-	width = 5
-	height = 4
+	match_width = 5
+	match_height = 4