.hgignore: add vendor tree composer.json: new packages plugins/thunderbird_labels/thunderbird_labels.php: change hook and RFC822 use wrt whitelisting to avoid deprecated stuff index.php: commented debugging hooks others: new releases of vendor packages?

<?php
/**
 * Localizations for Kolab Calendar plugin
 *
 * Copyright (C) 2014, Kolab Systems AG
 *
 * For translation see https://www.transifex.com/projects/p/kolab/resource/calendar/
 */
?>