With iceweasel-l10n-de 1:27.0-1~bpo70+1 iceweasel show "Nightly", uninstall this package and iceweasel show "Iceweasel" again.
ii iceweasel 27.0-1~bpo70+1 amd64 Web browser based on Firefox ii iceweasel-l10n-de 1:27.0-1~bpo70+1 all German language package for Iceweasel
