Fixes #448 by removing the itemHash filter, and ensuring null is returned if no item is found.
Fixes #448 by removing the itemHash filter, and ensuring null is returned if no item is found.

48klocs/DIM,DestinyItemManager/DIM,LouisFettet/DIM,bhollis/DIM,bhollis/DIM,bhollis/DIM,delphiactual/DIM,chrisfried/DIM,DestinyItemManager/DIM,48klocs/DIM,delphiactual/DIM,bhollis/DIM,DestinyItemManager/DIM,chrisfried/DIM,LouisFettet/DIM,delphiactual/DIM,48klocs/DIM,chrisfried/DIM,delphiactual/DIM,DestinyItemManager/DIM,chrisfried/DIM