Minor uptade in French usermanual
Update French usermanual
Merge branch 'master' of https://github.com/darktable-org/darktable
Update French usermanual
Merge branch 'master' of https://github.com/darktable-org/darktable
Proofreading of the French user manual (the first 50 pages)
Merge branch 'master' of https://github.com/darktable-org/darktable
Proofreading of the entire French user manual
Merge branch 'master' of https://github.com/darktable-org/darktable
Merge branch 'master' of https://github.com/darktable-org/darktable
Merge pull request #777 from michleb/master

Proofreading of the entire French usermanual