Merge branch 'ma_2018/erraji' into develop

include/ITAPropagationPathSim/MirrorImage/UrbanEngine.h

include/ITAPropagationPathSim/MirrorImage/_SourceFiles.cmake

include/ITAPropagationPathSim/Urban/DiffractionEngine.h

include/ITAPropagationPathSim/Urban/ImageSourceEngine.h

include/ITAPropagationPathSim/Urban/_SourceFiles.cmake

include/ITAPropagationPathSim/UrbanDiffraction/Engine.h

include/ITAPropagationPathSim/_SourceFiles.cmake

src/ITAPropagationPathSim/MirrorImage/_SourceFiles.cmake

src/ITAPropagationPathSim/Urban/DiffractionEngine.cpp

src/ITAPropagationPathSim/Urban/ImageSourceEngine.cpp

src/ITAPropagationPathSim/Urban/_SourceFiles.cmake

src/ITAPropagationPathSim/_SourceFiles.cmake

...les/SimpleUrbanImageModelTest_SimpleUrbanEnvironment.json

tests/ImageModel/SimpleUrbanImageModelTest.cpp

tests/UrbanDiffraction/SimpleUrbanDiffractionTest.cpp