message: Close the application when there are no more terminal tabs open
diff: @@ -201,7 +201,7 @@ export class MainWebUi extends ThemeableElementBase implements keybindingmanager
  }
  getTabCount(): number {
  - return this._getAllTabContentElements().length;
  + return this._getAllTabContentElements().filter( (el) => !(el instanceof EmptyPaneMenu)).length;
  }
  refresh(level: ResizeRefreshElementBase.RefreshLevel): void {
  