basecurve: fix typo and ignore 0-cnt samples in fit
pfm: load stat timestamp as date/time taken.

makes it possible to sort by more recent render in lt.
Make sure we update only the presets for the given operation.

There was a bug in this update SQL statement where all presets with
the same name and possibly for different module were updated.
Fix bug: it is impossible to set image rating using the mouse

When the option to show the ratings on all images is set, it was impossible
to set the image rating using the mouse on the stars. Removing a bogus
initialization that was called for every image fixes that.
picasa: remove all references to album privacy and hardcode it as private
picasa: change UI references to google+
Add Nikon D800 specific base curve.
Italian translation updated for Google+ Photo
Update French translation.
Merge pull request #285 from bartokk/master

Italian translation updated for Google+ Photo
dither: make damping slider steps coarser
(cherry picked from commit 60a08a2a477ac160bb87690733c6a5f5fcef3e51)
blending: fix issue in connection with spot removal
fix for snapshot module if canvas exceeds thumbnailsize
Merge branch 'snapfix' of https://github.com/wgoetz/darktable into snapfix