Extract movie metadata from .nfo file to help in search

[aelesbao]

I saw that some subtitles can't be found because of specific releases of the movie. To minimize this problem, most of the torrents and nzb's provides a '.nfo' file with the "Complete name" of the movie inside it. This info can help to narrow down the results and give a better experience to the user.

I sugest that, when possible, we parse the '.nfo' file for extra hints in the query.