rTorrent: Version 3.1.9

commit msgs explains it all... :)

added tunned rtorrent.rc for RPi, lower memory foot print

fixed series mkdir based on names 

added rutorrent sort on labels, multi level is supported by adding labels like "tvshows/serie.one" and so on...
 default settings will move torrent data to /storage/tvshows/serie.one/ on completion. 
 no need to care about download dirs and so on... :)

added plugin lbll-suite to handle labels better in rutorrent