Numerous tweaks and fixes.

- Fixed the teleporter room being labeled wrong. Now "Long-Range
Teleporter". Resolves #136
- Beach now has clutter. Resolves #141
- Beach now has borders. Resolves #142 but creates a new problem by
making the map too small. I'll fix this later.

code/game/objects/structures/map_blocker_vr.dm

@@ -0,0 +1,18 @@
+// For mappers to make invisible borders. For best results, place at least 7 tiles away from map edge.
+
+/obj/effect/blocker
+	desc = "You can't go there!"
+	icon = 'icons/turf/wall_masks.dmi'
+	icon_state = "rdebug"
+	anchored = 1.0
+	opacity = 0
+	density = 1
+	unacidable = 1
+
+/obj/effect/blocker/New()
+	icon = null // Make it disappear.
+	icon_state = null // Probably not nessicary.
+
+/obj/effect/blocker/initialize() // For non-gateway maps.
+	icon = null
+	icon_state = null