Allow IMDB querying for video files, thus adding movie metadata.

Allow for movie metadata download from IMBd like xbmc, boxee, or other popular video players. this should work asynchronously as the media import is undergoing. If several matches are found, ie. "Robbin Hood" the 1922, 1973, 1991, 2010 and the year is nowhere to be found in the description of the file, there's has to be a switch somewhere to: a- prompt the user for selection b-download metadata for all matches and attach them into the item, hoping that the user cleans that mess up sometime.