fixed: Stream details for current file were not stored when item was not in the db yet
fixed: Media flags didn't load for non-db items
changed: Check for streamdetails in the db before storing them
changed: Check whether streamdetails exist in the db before storing them
fixed: The VideoThumbLoader didn't fetch streamdetails for items that didn't have a file id set in their infotag
fixed: Stream/flag loading for db items was broken