Fix adding duplicate track and merging comments

Fixes #271

app/playlistmodel.py

@@ -985,6 +985,7 @@ class PlaylistModel(QAbstractTableModel):
                         playlist_row.note += "\n" + note
                     else:
                         playlist_row.note = note
+                self.refresh_row(session, playlist_row.row_number)
                 session.commit()
 
         # Carry out the move outside of the session context to ensure

app/playlists.py

@@ -214,7 +214,13 @@ class PlaylistDelegate(QStyledItemDelegate):
             doc.setTextWidth(option.rect.width())
             doc.setDefaultFont(option.font)
             doc.setDocumentMargin(Config.ROW_PADDING)
-            doc.setHtml(option.text)
+            if '\n' in option.text:
+                txt = option.text.replace('\n', '<br>')
+            elif '\u2028' in option.text:
+                txt = option.text.replace('\u2028', '<br>')
+            else:
+                txt = option.text
+            doc.setHtml(txt)
 
         # For debugging +++
         # Calculate sizes