PyMOL Web Services Summary

### Changes

- PyMOL now informs the user and exits gracefully if launched using a PWG which directs it to use a busy port.
- The PyMOL JavaScript API has been extended with a buffering system which can improve execution speed, reduce traffic, and guarantee in-order execution even on browsers such as IE.
- Four new sample mini-applications have been added.
- HTML based discussion and documentation has been updated.