load of fixes

- increased age_min from 18 to 21
- gave RCDs an option of airlock direction
- buffed bluespace trays
- made more windows / walls directional and merging with airlocks/windows
- gave the rusty walls perspective sprites
- removed stoner language from beach bum
- enabled prisoner (for now)
- buffed HEVA not to be weak to goliaths
- brought back smaller, more realistic bee sprites

code/game/turfs/simulated/floor.dm

@@ -314,6 +314,7 @@
 			to_chat(user, "<span class='notice'>You build an airlock.</span>")
 			var/obj/machinery/door/airlock/A = new the_rcd.airlock_type(src)
 
+			A.setDir(the_rcd.airlock_dir) //GS13 - directional airlocks edit
 			A.electronics = new/obj/item/electronics/airlock(A)
 
 			if(the_rcd.conf_access)