po: update po/ca/contribute.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/de/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/de/contribute.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/es/contribute.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/pl/common-base.po (pulled from Transifex.net by CiviCRM l10n maintainer)
po: update po/sv/admin.po (pulled from Transifex.net by CiviCRM l10n maintainer)