Diff of /GUI/playlist/GUI_Playlist.h [652cdc] .. [22256a]

  Switch to side-by-side view 

--- a/GUI/playlist/GUI_Playlist.h
+++ b/GUI/playlist/GUI_Playlist.h
@@ -66,6 +66,7 @@
 
     void search_similar_artists(const QString&);
     void sig_no_focus();
+    void sig_sort_tno();
 
 public slots:
     void fillPlaylist(MetaDataList&, int, int);