rind: Only expand library playlist paths when added

Otherwise genres fill the list and make everything look cluttered.

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

rind/manager.py

@@ -120,6 +120,7 @@ class ManagerModel(GObject.GObject, Gtk.TreeModel):
             parent = self.iter_parent(iter)
             if self.iter_n_children(parent) == 1:
                 self.row_has_child_toggled(self.get_path(parent), parent)
+            if isinstance(plist, curds.LibraryPlaylist):
                 Treeview.expand_to_path(self.get_path(parent))
 
     def on_selection_changed(self, selection):