WIP: playlists.py refactor

Tracks are bold on import

app/musicmuster.py

@@ -931,8 +931,6 @@ class Window(QMainWindow, Ui_MainWindow):
         """
 
         self.statusbar.showMessage("Imports complete")
-        with Session() as session:
-            playlist_tab.update_display(session)
 
     def insert_header(self) -> None:
         """Show dialog box to enter header text and add to playlist"""

app/playlists.py

@@ -693,6 +693,9 @@ class PlaylistTab(QTableWidget):
             last_played_str = get_relative_date(last_playtime)
             _ = self._set_item_text(row, LASTPLAYED, last_played_str)
 
+            # This is a new track so must be unplayed
+            self._set_row_bold(row)
+
         else:
             # This is a section header so it must have note text
             if plr.note is None: