add(new FeedbackPanel("feedback"));
  public Admin()   {       Link lnkLogout = new Link("lnkLogout")     {      public void onClick()       {        ((SignInSession) Session.get()).logout();        setResponsePage(OwlReader.class);      }    };        add(lnkLogout);        // one tab for each available dictionary-database    ArrayList<AbstractTab> panels = new ArrayList<AbstractTab>();    panels.add(new AbstractTab(new Model("imported dictionaries"))    {      public Panel getPanel(String id){return new ImportedDicPanel(id);}    });    panels.add(new AbstractTab(new Model("dictionaries which may be imported"))    {      public Panel getPanel(String id){return new DicsToImportPanel(id);}    });        tabPanelDics = new AjaxTabbedPanel("tabPanel", panels);    add(tabPanelDics);  }