po: update po/ja/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/ja/report.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/lv/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/lv/event.po (pulled from Transifex.net by CiviCRM l10n maintainer)