Improve get_ and add_ scripts
Better functioning of get_physipkpd.py and add_physipkpd.py scripts. They're also now easier to read and cleaner.
Use the following to start a new PhysiPKPD project or add PhysiPKPD to an existing project:
python get_physipkpd.py --dir path/to/project/dir --studio
python add_physipkpd.py path/to/project/dir --studio