make complex_particles use new read_parameters

bfps/DNS.py

bfps/cpp/full_code/NSVE_no_output.hpp

bfps/cpp/full_code/NSVEcomplex_particles.cpp

bfps/cpp/full_code/NSVEparticles_no_output.hpp

bfps/cpp/full_code/postprocess.cpp

bfps/cpp/full_code/postprocess.hpp

bfps/cpp/full_code/test.cpp

bfps/cpp/full_code/test.hpp