exchange catch to cppunit as test framework in gui

CMake/CMakeLists_gui.txt

agui2/libraries/catch/include/catch.hpp

agui2/src/Models/AlgorithmModelBox.cpp

agui2/test-src/ModelBoxTest.cpp

agui2/test-src/ModelBoxTest.h

agui2/test-src/RegistryTest.cpp

agui2/test-src/RegistryTest.h

agui2/test-src/main.cpp

agui2/tests/TestModelBox.cpp

agui2/tests/TestRegistry.cpp

agui2/tests/main.cpp