Update French translation.
Updated Dutch translation
Merge pull request #725 from MRIG/master

Updated Dutch translation
Updated Dutch translation
Merge pull request #726 from MRIG/master

Updated Dutch translation
usermanual: fixes for #10182
Merge branch 'master' of ssh://github.com/darktable-org/darktable
usermanual: update front page for 1.6
usermanual: a few further fixes for #10175
Merge branch 'master' of https://github.com/darktable-org/darktable
Minor changes in French translation of the usermanual