dlgtrackinfo.ui - drawing the fields TITLE and ARTIST in different rows (more space)
dlgtrackinfo - show cover art in a QPushButton instead of using a QLabel
dlgtrackinfo - removing method to rescale covers
we are drawing the pixmap in a QIcon and as it has a fixed size, it's not necessary rescaling pixmaps
dlgtrackinfo - editing covers - call filebrowser when user click on the cover (needs more work)
Editing covers - add CoverCache::changeCoverArt(trackId, newCoverLoc)