merge update_cookbook branch in develop

...mentation/Cookbook/Art/ClassifImages/sample-selection.png

...ntation/Cookbook/Art/ClassifImages/samples-extraction.png

Documentation/Cookbook/Art/residual_registration-figure.png

Documentation/Cookbook/Art/residual_registration-figure.tex

Documentation/Cookbook/CMakeLists.txt

Documentation/Cookbook/rst/OTB-Applications.rst

Documentation/Cookbook/rst/Recipes.rst

Documentation/Cookbook/rst/recipes/optpreproc.rst

Documentation/Cookbook/rst/recipes/pbclassif.rst

Documentation/Cookbook/rst/recipes/pleiades.rst

Documentation/Cookbook/rst/recipes/residual_registration.rst