call select() by changed signalfrom PlaylistDAO to have PlaylistTableModel always up to date. Fixes https://bugs.launchpad.net/mixxx/+bug/1213603
Fixed drag and drop position and removed duplicated code, fixes https://bugs.launchpad.net/mixxx/+bug/1213734
Moved parts of PlaylistTableModel::moveTrack to playlistdao, inform Models when tracks are hiden from library. Made some funtions const.
move db queries for schuffleTracks to PlaylistDAO
split long queries in removeTracksFromPlaylists
AutoDJ shuffle respects selected tracks, fixes https://bugs.launchpad.net/mixxx/+bug/1169438
added missing trackIdList.clear()
fixes from  kain88-de comments
more fixes from kain88-de comments
removed unused PlaylistDAO::removeTrackFromPlaylists
Merge pull request #63 from daschuer/playlistChanged

Playlist changed