web site: buildsystem.pdf missing
In the section "Creating your own DUNE project module" in http://www.dune-project.org/doc/installation-notes.html there is a broken link to the DUNE Build System Howto (404 Not Found).
Has buildsystem.pdf moved somewhere else? I don't know which information was provided by this file, but maybe this information can now be found in https://gitlab.dune-project.org/core/dune-common/blob/master/doc/buildsystem/dune-common.rst (which was also suggested as a replacement for the broken link to cmakefaq.pdf in #9).
Anyway, we should fix this link in the installation-notes.