DlgTrackInfo - removing unused ENUM::reloadCoverCases
DlgTrackInfo - removing unused member
DlgTrackInfo - using txtLocation as QPainTextEdit instead of QLabel
It ensures a fixed height, making the text selectable and scrollable without shrinking the other fields.
It is essential in cases when the location is very big...
DlgTrackInfo - implements context-menu for CoverArt (using wcoverartmenu)
cosmetic fix - storing coverLoc and md5 in a QPair (WCoverArt + WCoverArtMenu)
DlgTrackInfo - removing unused member
- not placed by CoverArtProject, but it should not be there... so...