message: LifeCycle: Stop the crawler and delete the index when whe log out.
diff: @@ -613,6 +613,7 @@ export function onLoggedOut() {
  // so that React components unmount first. This avoids React soft crashes
  // that can occur when components try to use a null client.
  dis.dispatch({action: 'on_logged_out'});
  + EventIndexPeg.deleteEventIndex().done();
  stopMatrixClient();
  _clearStorage().done();
  }
  @@ -648,6 +649,7 @@ export function stopMatrixClient(unsetClient=true) {
  ActiveWidgetStore.stop();
  IntegrationManagers.sharedInstance().stopWatching();
  if (DMRoomMap.shared()) DMRoomMap.shared().stop();
  + EventIndexPeg.stop();
  const cli = MatrixClientPeg.get();
  if (cli) {
  cli.stopClient();
  