Simplify API: topology passed as parameter.

Core/FormFactors/FormFactorAnisoPyramid.cpp

Core/FormFactors/FormFactorAnisoPyramid.h

Core/FormFactors/FormFactorCone6.cpp

Core/FormFactors/FormFactorCone6.h

Core/FormFactors/FormFactorCuboctahedron.cpp

Core/FormFactors/FormFactorCuboctahedron.h

Core/FormFactors/FormFactorDodecahedron.cpp

Core/FormFactors/FormFactorDodecahedron.h

Core/FormFactors/FormFactorIcosahedron.cpp

Core/FormFactors/FormFactorIcosahedron.h

Core/FormFactors/FormFactorPolyhedron.cpp

Core/FormFactors/FormFactorPolyhedron.h

Core/FormFactors/FormFactorPyramid.cpp

Core/FormFactors/FormFactorPyramid.h

Core/FormFactors/FormFactorTetrahedron.cpp

Core/FormFactors/FormFactorTetrahedron.h

Core/FormFactors/FormFactorTruncatedCube.cpp

Core/FormFactors/FormFactorTruncatedCube.h

Core/PythonAPI/libBornAgainCore.py

Core/PythonAPI/libBornAgainCore_wrap.cxx