Dune-project.org error 404 page not found

Hello any and all,

on the Dune-project.org website, there are important missing pages such as "CMake FAQ" and the "DUNE Build System Howto" links on the Documentation/Installation page, which links respectively directs on an error 404 page. Also in About Dune/Features/ a lots of links too are running an error. ^.^

best regards