Remove everything from the sources.list file please. Those entries should be in the official repo list file aswell and packages.maulinux.org shouldn't be in there. (it should be nowhere as we deactivated that explicetely with this update)
Then after an apt-get update you should be able to install maui-apt-config again.
Hope that helps
Then after an apt-get update you should be able to install maui-apt-config again.
Hope that helps