Add support for thetvdb.com


Not sure what is all involved in this. Since this isn't really a media source it won't be a plugin. I guess I will have to create a new type of interface, IMediaMetaData. You can pass info to these to have them pass back metadata on the item to fill in blanks that are missing. This would be useful for the TV torrents that are listed. As well as some of the online content sites.