Chair overhaul!

Shouldn't be any noticable difference ingame, but the chair path has changed from
/obj/structure/stool/chair
to
/obj/structure/stool/bed/chair
Electric chair path has also been changed as per the above.

New electric chair sprites! They ~won't~ make you want to cut out your eyes!


git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3148 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/mob/screen.dm

@@ -487,7 +487,7 @@
 						for(var/mob/O in viewers(usr))
 							O.show_message(text("\red <B>[] manages to unbuckle themself!</B>", usr), 1)
 						usr << "\blue You successfully unbuckle yourself."
-						usr:buckled.manual_unbuckle_all(usr)
+						usr:buckled.manual_unbuckle(usr)
 		if("module")
 			if(issilicon(usr))
 				if(usr:module)