Merge branch 'composite_application' into develop

...rappers/ApplicationEngine/include/otbWrapperApplication.h

...pplicationEngine/include/otbWrapperCompositeApplication.h

...pers/ApplicationEngine/include/otbWrapperParameterGroup.h

...pers/ApplicationEngine/include/otbWrapperProxyParameter.h

Modules/Wrappers/ApplicationEngine/src/CMakeLists.txt

.../Wrappers/ApplicationEngine/src/otbWrapperApplication.cxx

.../ApplicationEngine/src/otbWrapperCompositeApplication.cxx

...appers/ApplicationEngine/src/otbWrapperParameterGroup.cxx

Modules/Wrappers/ApplicationEngine/test/CMakeLists.txt

...ApplicationEngine/test/otbApplicationEngineTestDriver.cxx

...rs/ApplicationEngine/test/otbWrapperParameterListTest.cxx