Started work on added drag and drop from deck to deck
Added WTrackProperty droppedTrack functionality
Added WTrackText droppedTrack functionality
Added drag functionality starting from WTrackText and WTrackProperty
Merge branch 'master' into feature/deck-to-deck

Conflicts:
	src/skin/legacyskinparser.cpp
Updated tooltips to reflect the new drop functionality
Removed incomplete trackproperty test
Renamed files from enginepassthrough -> engineaux
Renamed Class EnginePassthrough to EngineAux (Thank you Eclipse;-))
Fixed some remaining renames in comments and strings
renamed group from "[PassthroughN]" to "[AuxN]"
Rename Passthroug to AUX in sound preferences
fixed typo
Renamed the AUX to the Auxilliary in user visible strings for all English speakers. A suitable German translation would be AUX-Eingang.
Fix bad initialization of crate and playlist columns in ColumnCache.
Add more information for failed db query

In case we can't add a directory to the database this might have more
then one reason. It could be a duplicate or another transaction is
currently running.
Fix incorrect vinyl control shortcuts
Fixes lp:1274078
Updated dropTracksHere tooltip, moved drag creation to mouseMove event
Merge pull request #173 from loadstar81/feature/deck-to-deck

Support dragging track from deck to deck
changed Aux to Auxilliary