po: update po/de/admin.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/el/common-components.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/el/menu.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/nl/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)