Walter's Polarized DWBA Zero magnetic field test for App is also working now. So, everything works, he issue can be closed. :-)

MesoCrystal test is off, new fitting examples for spheres in a lattice and corresponding changes in visitors

different implementation of getVolume() in FormFactorBox and FormFactorParallelepiped in order to be consistent with the other form factors
explicit addition of the special case q=0 in FormFactorSphere and FormFactorPyramid

New Python unittest for testing IntensityData from CMake, all py examples/tests are adjusted for new getIntensityData()

Merged form factor material decorators into FormFactorDecoratorMaterial (for both matrix and scalar materials); moved matrix evaluate to IFormFactor; removed FormFactorPol

Refactor: rename form factor decorators containing material information to FormFactorDecoratorScalarMaterial and FormFactorDecoratorMatrixMaterial

Refactored FormFactor chain: transformation now sits in Particle; wavevector scattering factor and scattering density reside in the same class (FormFactorDecoratorRefractiveIndex and FormFactorDecoratorMaterial for scalar and matrix scattering respectively)

MSVC:  inline functions that use static members are moved into *.cpp files to avoid undefined symbols