Commit when adding track to header

Fixes #238

app/dialogs.py

@@ -138,7 +138,9 @@ class TrackSelectDialog(QDialog):
 
         self.ui.matchList.clear()
         if len(s) > 0:
-            if self.ui.radioTitle.isChecked():
+            if s.startswith("a/") and len(s) > 2:
+                matches = Tracks.search_artists(self.session, "%" + s[2:])
+            elif self.ui.radioTitle.isChecked():
                 matches = Tracks.search_titles(self.session, "%" + s)
             else:
                 matches = Tracks.search_artists(self.session, "%" + s)

app/playlistmodel.py

@@ -185,6 +185,7 @@ class PlaylistModel(QAbstractTableModel):
                 self.refresh_row(session, row_number)
                 # Repaint row
                 self.invalidate_row(row_number)
+                session.commit()
 
         self.signals.resize_rows_signal.emit(self.playlist_id)
 
@@ -1123,6 +1124,7 @@ class PlaylistModel(QAbstractTableModel):
                 self.refresh_row(session, row_number)
                 self.invalidate_row(row_number)
                 self.signals.resize_rows_signal.emit(self.playlist_id)
+                session.commit()
 
     def reset_track_sequence_row_numbers(self) -> None:
         """