Merge pull request #66 from olegtarasov/develop

Added labels to AutoAdd plugin
WebSockets event server.
Only send TorrentCompletedMessage if we have downloaded anything.
Prevents messages being sent in error when adding torrents that already exist on disk etc.
Removed some muting of events.
Refactored the torrent parts.
- Fixed setting file priorities. Closes #68.
- Instead of querying libtorrent for every request, an internal thread keeps the torrents updated and only the in-memory list is returned when getting torrents.
Unsubscribe websocket when closing.
Bumped version number.
Switched to a concurrent dictionary.
Bumped version number.
Label fix.
Bumped version number.
Added favicon. Closes #71.
Posh tools refactoring.
Added Importer extension. Fixes #74.
Implemented per-torrent settings. Fixes #70.
Ordinary save path. Using TorrentStatus over TorrentHandle.