Switch to side-by-side view

--- a/GUI/playlist/GUI_Playlist.cpp
+++ b/GUI/playlist/GUI_Playlist.cpp
@@ -81,6 +81,8 @@
             this, SLOT(metadata_dropped(const MetaDataList&, int)));
     connect(ui->listView, SIGNAL(sig_rows_removed(const QList<int>&, bool)), 
             this, SLOT(rows_removed(const QList<int>&, bool)));
+    connect(ui->listView, SIGNAL(sig_sort_tno()), 
+            this, SIGNAL(sig_sort_tno()));
 
     connect(ui->listView, SIGNAL(sig_selection_changed(MetaDataList&)), 
             this, SLOT(selection_changed(MetaDataList&)));
@@ -178,7 +180,7 @@
     ui->listView->fill(v_metadata, cur_play_idx);
     _total_msecs = 0;
 
-    int actions = ENTRY_REMOVE;
+    int actions = ENTRY_REMOVE | ENTRY_SORT_TNO;
 
     ui->listView->set_context_menu_actions(actions);
     ui->listView->set_drag_enabled(true);