Merge branch 'refactoring' into 'master'

doc_cookbook/conf.py

doc_cookbook/generate_cookbook.txt

doc_cookbook/rst_API_Python/coRegistation_S1IW.rst

doc_cookbook/rst_API_Python/diapOTB.rst

doc_cookbook/rst_API_Python/diapOTB_S1IW.rst

doc_cookbook/rst_API_Python/diapOTB_S1IW_TEST.rst

doc_cookbook/rst_API_Python/index.rst

doc_cookbook/rst_API_Python/modules.rst

doc_cookbook/rst_API_Python/processings.rst

doc_cookbook/rst_API_Python/utils.rst

python_src/diapOTB.py

python_src/diapOTB_OLD.py

python_src/diapOTB_S1IW.py

python_src/diapOTB_S1IW_OLD.py

python_src/processings/DInSar.py

python_src/processings/Ground.py

python_src/processings/Metadata_Correction.py

python_src/processings/Pre_Processing.py

python_src/processings/__init__.py

python_src/utils/DiapOTB_applications.py