Auto-purge .torrent folder

[wouldou]

I have accidentally removed a lot of torrents without deleting the .torrent files and as all .torrent files land in a single category-wide folder (see my other request here) it's hard manual work to identify all the orphaned non-purpose .torrent files.

So a clean-up function would be nice, by which µTorrent check the content of the current .torrent-folders and see if there are any .torrent files (or other files that might have been moved there manually) in there and either delete them or move them to a third location.