polishing, mainly in fft reconstruction.
added fftw library file and fortran file for type specification
added folder references with literature for visualization/geometry reconstruction
postprocessing: renamed name of python/f2py modul from "reconstruct" to "postprocessingMath", added some numerical operations to use for postprocessing.
mpie_spectral and numerics: added switch to prevent pre calculation of gamma_hat. slower, but saves memory
3Dvisualize: started to add support for gmsh (not fully working yet)
reconstruct: new version of f2py/Fortran subroutines for output of results from spectral method
removed storage of full cauchy stres field from mpie_spectral.f90, only average is stored now
added cauchy stress and von mises equivalent calculation to spectral post.
added new tools to generate colormaps for paraview and gmsh, written in python
removed old fortran colormap generator.
removed test.py (not longer needed) and the python module reconstruct.pyd (not running under linux)