Update French translation.
-d perf stats are showd after, not before. Use correct tense
dt_imageio_open_tiff(): do not try to open e.g. 16bit half or 32bit int TIFFs
Merge branch 'master' of https://github.com/darktable-org/darktable
update translation of usermanual till Denoise-Non local means(not included)
	modifié:         doc/usermanual/po/fr.po
	doc/usermanual/po/fr.mo