MRG: Merge branch 'support-opencv3' into develop

CMake/FindOpenCV.cmake

Documentation/Latex/Insight.bib

Documentation/SoftwareGuide/Latex/Classification.tex

Documentation/SoftwareGuide/Latex/Installation.tex

...ns/AppClassification/include/otbLearningApplicationBase.h

.../AppClassification/include/otbLearningApplicationBase.txx

.../Applications/AppClassification/include/otbTrainBoost.txx

...ations/AppClassification/include/otbTrainDecisionTree.txx

...AppClassification/include/otbTrainGradientBoostedTree.txx

...es/Applications/AppClassification/include/otbTrainKNN.txx

...Applications/AppClassification/include/otbTrainLibSVM.txx

...tions/AppClassification/include/otbTrainNeuralNetwork.txx

...cations/AppClassification/include/otbTrainNormalBayes.txx

...tions/AppClassification/include/otbTrainRandomForests.txx

...es/Applications/AppClassification/include/otbTrainSVM.txx

.../AppClassification/include/otbTrainSharkRandomForests.txx

Modules/Applications/AppClassification/test/CMakeLists.txt

...earning/Supervised/include/otbBoostMachineLearningModel.h

...rning/Supervised/include/otbBoostMachineLearningModel.txx

Modules/Learning/Supervised/include/otbCvRTreesWrapper.h