Correct order of tracks when adding albums to playlist

SQL query output for CreatePlaylistItemsFromMusicAlbum action is now ordered by iDisc and iTrack to prevent incorrect playback sequence of tracks in the playlist
Merge pull request #21 from Kucheek/develop

Correct order of tracks when adding albums to playlist
Possible fix for crash caused by race condition when the Bonjour service is published multiple times
Avoid crash when duplicate plugin IDs are read from config file
Create playlist items for music
faulty change in last commit
Merge pull request #22 from johanj/develop

Create a music playlist from file
Added safeguard for "new FileInfo()" exceptions
Added safeguard for "new DirectoryInfo()" and "DirectoryInfo.GetFiles()" exceptions
Bumped server version to 16 due to api changes, removed duplicate server version field
Bumped server version again (to 17) as it already was 16 in the previous version ..
Updated installer for 0.8.3
Re-added lost "TvPluginInstalled" property from welcome message
Merge branch 'develop' into 'master'