public static function ActionUsers()
 {
     if (AdminModel::isAdmin()) {
         $variables = ['template' => 'panel.php', 'panel_template' => 'admin_users.php', 'users' => AdminModel::getUsers()];
         $variables = array_merge_recursive(PageController::getMainVariables(), $variables);
         Template::render('template.php', $variables);
     } else {
         header('Location: ' . $_SERVER['HTTP_REFERER']);
     }
 }