script to do sanity checks on stationary points in a database and delete the ones that fail the test
(major) Several changes:
- Removed AmberBaseSystem. Now there is just AmberSystem which first tries to use AMBGMin potential, and it it fails defaults to OpenMM

- Changes in permlist function, comments, print statements and in MAIN
Merge branch 'master' of github.com:js850/PyGMIN