po: update po/ar/hrdcase.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/de/event.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/ko_KR/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/pl/menu.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/uk/member.po (pulled from Transifex.net by CiviCRM l10n maintainer)