BUG: Inversion of parameters in the constructor of the GBT classifier in the TrainImagesClassifier application

TEST: Add tests of several classifiers for the OpenCV framework in the TrainImagesClassifier application

ENH: Revert: handling ParameterType_Float SVM parameters for the OpenCV framework in the TrainImagesClassifier application

ENH: Handling ParameterType_Double SVM parameters for the OpenCV framework in the TrainImagesClassifier application

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

DOC: Typo and punctuation correction and clarification of the documentation and menus of the otbTrainImagesClassifier application

ENH: Add measurements of the confusion matrix in the LOG of the otbComputeConfusionMatrix application

ENH: Removal of the numbers of reference and produced labels input parameters in the otbComputeConfusionMatrix application

ENH: Setting the default field name containing the label values to Class in otbComputeConfusionMatrix

ENH: Definition of a format for confusion matrix files in otbComputeConfusionMatrix and otbFusionOfClassifications applications

ENH: clarify OpticalCalibration app by using parameter clamp instead of noclamp which was disturbing

ENH: add vfn option in ValidateImageClassifier application to be consistent with training application.