connect(dayNavigator, SIGNAL(dateChanged(const QDate &)), SLOT(updateDayView(const QDate &)));
connect(trackDayNavigator, SIGNAL(dateChanged(const QDate &)), SLOT(updateTracksView(const QDate &)));
connect(favouriteDayNavigator, SIGNAL(dateChanged(const QDate &)), SLOT(updateFavouritesView(const QDate &)));
connect(dayNavigator, SIGNAL(dateChanged(const QDate &)), SLOT(updateDayView(const QDate &)));
connect(trackDayNavigator, SIGNAL(dateChanged(const QDate &)), SLOT(updateTracksView(const QDate &)));
connect(favouriteDayNavigator, SIGNAL(dateChanged(const QDate &)), SLOT(updateFavouritesView(const QDate &)));