begin reuse of widgets across pages

ui/browsing/nowplayingpage.go

@@ -62,14 +62,16 @@ func NewNowPlayingPage(
 	a.tracklist.OnVisibleColumnsChanged = func(cols []string) {
 		a.conf.TracklistColumns = cols
 	}
-	a.tracklist.AutoNumber = true
-	a.tracklist.DisablePlaybackMenu = true
+	a.tracklist.Options = widgets.TracklistOptions{
+		AutoNumber:          true,
+		DisablePlaybackMenu: true,
+		AuxiliaryMenuItems: []*fyne.MenuItem{
+			fyne.NewMenuItem("Remove from queue", a.onRemoveSelectedFromQueue),
+		},
+	}
 	contr.ConnectTracklistActions(a.tracklist)
 	// override the default OnPlayTrackAt handler b/c we don't need to re-load the tracks into the queue
 	a.tracklist.OnPlayTrackAt = a.onPlayTrackAt
-	a.tracklist.AuxiliaryMenuItems = []*fyne.MenuItem{
-		fyne.NewMenuItem("Remove from queue", a.onRemoveSelectedFromQueue),
-	}
 	a.title = widget.NewRichTextWithText("Now Playing")
 	a.title.Segments[0].(*widget.TextSegment).Style.SizeName = widget.RichTextStyleHeading.SizeName
 	a.statusLabel = widget.NewRichTextWithText("Stopped")