po: update po/de_DE/event.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/fr_FR/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/sv_SE/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)