/**
  * Show article's history
  * Show all versions of an article
  * Versions are displayed in reverse chronological order
  *
  * @param   integer $id_area Area ID
  * @param   string 	$lang Language code
  * @param   string	$bid, unique ID for articles
  * @return  void
  */
 public function history($id_area, $lang, $bid)
 {
     // load dictionaries
     $this->dict->get_wordarray(array('history', 'articles'));
     // get the page
     $page = $this->get_page('articles/history');
     $view = new X4View_core('container');
     // left
     $view->content = new X4View_core('articles/history');
     $view->content->page = $page;
     $view->content->bid = $bid;
     $view->content->navbar = array($this->site->get_bredcrumb($page), array('articles' => $_SESSION['referer']));
     // left
     $mod = new Article_model();
     $view->content->art = $mod->get_by_bid($bid);
     $view->content->history = $mod->get_history($id_area, $bid);
     $view->render(TRUE);
 }