By and large, I'm getting pretty sick of the rash of young adult supernatural stories that have sprung up in the wake of 'Twilight.' And truth be told, when I heard about 'The Mortal Instruments: City of Bones,' that is precisely what I thought it would be. Based on a series of novels by Cassandra Clare, the film revolves around a young girl (Lily Collins) who figures out she can see into a world…