move_item
Description:
Changes the location of a recently used resource from uri to new_uri.
Please note that this function will not affect the resource pointed by the URIs, but only the URI used in the recently used resources list.
Parameters:
| this | |
| uri | the URI of a recently used resource | 
| new_uri | the new URI of the recently used resource, or  null to remove the item pointed by  | 
Returns:
| true on success |