Sort per sortest path

[ioannaMitropoulou]

The installation of the ml rose library was causing problems with the pytest.

Also, the sorting algorithm did not really return a good job and was very slow. I archived the function at the scripts folder, in order to be able to complete the pytesting. It would be great if we could find a better alternative for that sorting. I can ask Andrei who had mentioned that he had implemented his own function that does this job. Are there any other C++ libraries that could help with this?