/**
  * formulario nuevo usuario
  */
 public static function new_user()
 {
     // nuevo usuario
     if (isset($_POST['check_connection'])) {
         if (isset($_POST['username'])) {
             $username = req("username");
         }
         if (isset($_POST['password'])) {
             $password = req("password");
         }
         if (isset($_POST['server'])) {
             $server = req("server");
         }
         if (isset($_POST['remotedir'])) {
             $remotedir = req("remotedir");
         }
         if (isset($_POST['mails'])) {
             $mails = req("mails");
         }
     } else {
         $username = "";
         $password = "";
         $server = "";
         $remotedir = "";
         $mails = "";
     }
     // agregar nuevo informe
     echo "\n            <br><br><br><br><br>\n            <div class=\"container\">\n                <div class=\"row\">\n                    <div class=\"center-block\">                          \n                        <a class=\"nuevo-usuario\" data-toggle=\"modal\" data-target=\"#nuevoUsuario\"><i class=\"fa fa-user-plus fa-4x\"></i>&nbsp;Nuevo usuario iMetos</a>\n                    </div>\n                </div>\n            </div>";
     echo "  <!-- Modal -->\n            <div id=\"nuevoUsuario\" class=\"modal fade\" role=\"dialog\">\n                <div class=\"modal-dialog\">\n                    <!-- Modal content-->\n                    <div class=\"modal-content\">\n                        <div class=\"modal-header\">\n                            <button type=\"button\" class=\"close\" data-dismiss=\"modal\">&times;</button>\n                            <h4 class=\"modal-title\">Agregar usuario</h4>\n                        </div>\n                        <div class=\"modal-body\">\n                            <form name=\"user_new\" method=\"post\" action=\"/users/new\">";
     User::formulario_nuevo_usuario();
     echo "              </form>\n                        </div>\n                        <div class=\"modal-footer\">\n                            <button type=\"submit\" name=\"config_admin\" class=\"btn btn-default\"><i class=\"fa fa-floppy-o\" aria-hidden=\"true\"></i>&nbsp;Guardar usuario</button>&nbsp;\n                            <button type=\"button\" class=\"btn btn-default\" data-dismiss=\"modal\"><i class=\"fa fa-times\" aria-hidden=\"true\"></i>&nbsp;Close</button>\n                        </div>\n                    </div>\n                </div>\n            </div>";
 }