unit_view.insert_column_with_attributes(-1, "Load State", new CellRendererText(), "text", 2);
unit_view.insert_column_with_attributes(-1, "Active State", new CellRendererText(), "text", 3);
unit_view.insert_column_with_attributes(-1, "Load State", new CellRendererText(), "text", 2);
unit_view.insert_column_with_attributes(-1, "Active State", new CellRendererText(), "text", 3);