In coordination with M. Aichorn and O. Peil we decided to change the
default of the normion to False. This is closed to the behavior of the
other converters w90, elk, and wien2k, which will always orthonormalize
all projectors in a unit cell together (normion=False) and not per ion
site (normion=True). Changed tests accordingly.
* moved the plovasp C++ code to c++/triqs_dft_tools/converters/vasp
* added global header triqs_dft_tools/triqs_dft_tools.hpp
* python dir based on single cmakelist file
* registered C++ tests for plovasp
* corrected imports for py3 tests for plovasp
* corrected block order in sigma_from_file and srvo3_Gloc
* exchanged ref files for sigma_from_file, srvo3_Gloc, SrVO3.ref.h5
* moved vasp converter bash scripts from dir shells to bin dir