ENH: In the otbDSFusionOfClassifiersImageFilter the DS fusion is not processed if all the classifiers give the same result

STYLE comment have been added,TODO check if cell index should be calculated from the center of the pixel or not.

ENH: Replacing the 3 SVM classification applications to handle the OpenCV machine learning framework

ENH: Handling of special cases in the Dempster Shafer combination when masses of belief are either equal to zero or one