plg_installer_dpcalendar Digital Peak 2026-07-13 (C) 2022 Digital Peak GmbH https://www.gnu.org/licenses/gpl-3.0.html info@digital-peak.com joomla.digital-peak.com 10.11.2 PLG_INSTALLER_DPCALENDAR_XML_DESCRIPTION DigitalPeak\Plugin\Installer\DPCalendar language services src