Deluge bugs

Fixed two bugs related to deluge:
* The torrent label was always converted to lowercase
* If the deluge web client was running on https, the "Test Connection" button worked fine, but torrents couldn't be added because of the error:

        Deluge: Authentication Failure
To fix this, the option ```TORRENT_VERIFY_CERT``` was added (also on the interface). The bug was first reported on the [SickBeard ThePirateBay Edition (Torrent branch+Subtitle)](http://www.sickbeard.com/forums/viewtopic.php?f=13&t=2386&start=1860#p41065) forum.