renamed addToAutoDJQueue() to  addPlaylistToAutoDJQueue()
split addPlaylistToAutoDJQueue
import tracks via bulk transfer from external library
consolidated redundant code in BaseExternalLibraryFeature::appendTrackIdsFromRightClickIndex()
moved playlist name calculation to PlaylistDAO::createUniquePlaylist(&playlist)
removed unused inEntryTag from TraktorFeature
Merge branch 'master' into features_banshee

Conflicts:
	src/library/baseexternallibraryfeature.cpp
appendTrackIdsFromRightClickIndex returns now returns the playlist name as well
Merge branch 'master' into features_banshee
implement appendTrackIdsFromRightClickIndex in BansheeFeature to avoid code duplication