code: private void addLoginButton()
    {
      VaadinSession session = VaadinSession.getCurrent();
      if (session != null)
      {
        boolean kickstarter = Helper.isKickstarter(session);
  
        if (!kickstarter)
        {
          addComponent(lblUserName);
          setComponentAlignment(lblUserName, Alignment.MIDDLE_RIGHT);
          addComponent(btLogin);
          setComponentAlignment(btLogin, Alignment.MIDDLE_RIGHT);
  
        }
      }
    }
docs: Adds the login button + login text to the toolbar. This is only happened,
  when the gui is not started via the kickstarter.
  
  <p>
  The Kickstarter overrides the "kickstarterEnvironment" context parameter
  and set it to "true", so the gui can detect, that is not necessary to offer
  a login button.</p>
  
  component.