/**
  * Lists all pages with given $tag
  *
  * @param string $tag An urlencoded tag string
  *
  * @return void
  */
 public function listAction($tag)
 {
     $tag = Tag::fromUrl($tag);
     $pages = $this->pageRepository->findAllByTag($tag);
     $this->view->assign('pages', $pages);
     $this->view->assign('tag', $tag);
 }