Adapted paths to PythonClasses4MAD in main files
Removed some symbolic links since they are not used anymore

madxrunner.py is now within the repository in PythonClasses4MAD
Python_Classes4MAD is a submodule
Directory DRIVE.Massimo does not exist anymore
@rogeliotomas If they are used for some reason, let me know.
Fixed path to Python_Classes4MAD
Added path to internal Python_Classes4MAD