More splitting up of code. Barrier seems to be CTF only,

so I figured a CTF folder would be good for containing it.
Perhaps we could do Mode-Specific\CTF ?

Portal seems more like an Effect, so it went in Effects.

Code/CTF/barrier.dm

@@ -0,0 +1,13 @@
+/obj/barrier
+	anchored = 1.0
+	density = 1
+	icon = 'stationobjs.dmi'
+	icon_state = "barrier"
+	name = "barrier"
+	opacity = 1	
+
+	New()
+		var/t = 1800
+		if (ctf)
+			t = round(ctf.barriertime * 600)
+		spawn(t) del(src)