Seeding support

Design intent:
- After torrent downloading is complete the seeding phase starts, seeding parameters can be set per torrent provider
- When the seeding phase starts the checkSnatched function renames all files if (sym)linking/copying is used. The movie is set to done (!), the release to seeding status.
- Note that Direct symlink functionality is removed as the original file needs to end up in the movies store and not the downloader store (if the downloader cleans up his files, the original is deleted and the symlinks are useless)
- checkSnatched waits until downloader sets the download to completed (met the seeding parameters)
- When completed, checkSnatched intiates the renamer if move is used, or if linking is used asks the downloader to remove the torrent and clean-up it's files and sets the release to downloaded

Known items/issues:
- the renamer tags the folder with a .ignore file. when the downloader tries to clean up the folders it leaves this file and the folder.