TYPO3 Core

currently the title of a backend layout is not translatable but this is needed for multilingual pages (and editors).

A simple solution would be to use a hook
ext_tables.php

 * Make backend-layout selector multilanguage aware
 */
t3lib_div::requireOnce(t3lib_extMgm::extPath($_EXTKEY) . 'Classes/Hooks/ItemsProcFunc.php');
$GLOBALS['TCA']['backend_layout']['ctrl']['label_alt_force'] = 1;
$GLOBALS['TCA']['backend_layout']['ctrl']['label_userFunc'] = 'Tx_Modernpackage_Hooks_ItemsProcFunc->getLabel';

Classes/Hooks/ItemsProcFunc.php

<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2012 Georg Ringer <typo3@ringerge.org>
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

/**
 * ItemsProcFunc to make backend_layout fields
 * multilanguage aware if the name starts with 'LLL:'
 *
 * @package TYPO3
 * @subpackage tx_modernpackage
 */
class Tx_Modernpackage_Hooks_ItemsProcFunc {

    /**
     * Labels of a be_layout record
     *
     * @param array $params
     * @return void
     */
    public function getLabel(array &$params) {
        if (t3lib_div::isFirstPartOfStr($params['row']['title'], 'LLL:')) {
            $params['title'] = $GLOBALS['LANG']->sL($params['row']['title'], TRUE);
        } else {
            $params['title'] = $params['row']['title'];
        }
    }
}

?>