Merge pull request #229 from guitorri/update_pt_BR

Update translation pt_BR release 1.2.1
masks and blending: fix bug in edit-mode togglebutton
Merge branch 'master' of ssh://github.com/darktable-org/darktable
curve shape : avoid hole in the drawing
Remove code commented out with mask implementation.

Add tooltip for documentation purpose of the spot iop.
Update french translation.
curve : fix some artefacts bug #9414
masks : small usability enhancements

smaller step for resize with mouse wheel
add multi instance name to the name of the masks groups
prevent accidental moving of corners when clicking on it
masks and blending: make sure new blend mode NORMAL2 is used as default
colorcorrection: warm tone preset and cleanup
(cherry picked from commit aa827ebcd6f1e90b1856921e5b7e1483eb341d9d)
atrous: chroma denoise should be confined to the fine end of the scale
(cherry picked from commit cdb08b9747237b485222410d8010239fad05654c)
update fuzzy pt_BR