Add es
Merge branch 'master' of https://github.com/darktable-org/darktable
Made lensfun lookups for one lens really unique.  Fixes bug #9662.
Add keywords, as recommended here:

 http://standards.freedesktop.org/desktop-entry-spec/latest/ar01s05.html,
 http://bugs.debian.org/693918, and
 https://wiki.gnome.org/Initiatives/GnomeGoals/DesktopFileKeywords
Proper english. 'allows one to', not 'allows to'
Keywords value MUST end with a semicolon
Use Exif.OlympusEq.LensType and give it precedence over
Exif.OlympusEq.LensModel and Exif.Photo.LensModel since it is normally
the most precise data and the string used in (the current svn of)
lensfun.
Don't switch group if module activated via hotkey is already visible
basecurve tool: stand clearly we suppose the JPEG file is sRGB
basecurve tool: add tentative tonecurve support, still incomplete
basecurve tool: allow easy compilation of optimized binary
huge images: fix issues in pixelpipe, tiling, opencl, blend, gaussian, bilateral

still pending: masks, all modules
huge images: fix issues in masks
Exposure IOP: Deflicker (port from Magic Lantern)
Merge branch 'master' into hugeimage
basecurve tool: make some functions static, move usage to own function
basecurve tool: single exit point in main to avoid leaks in error paths
basecurve tool: add license header
basecurve tool: add gnuplot script for tonecurve
basecurve tool: make it easier to add tonecurve presets