Basic static resource versioning support using GET parameters.
Small refactoring moving common template variables to BaseHandler to avoid repetition
Update templates to use auto_ver versioning of css and js
Ensure the doctor's qualifications appear in the visit print version.
Ensure the #sheet element takes up the full printed page width.
Saner defaults for backing up stuff

- A Misc Admin UI hook to create backups
- Backups are stored in the right PRS-Production directory
- Dev and Production databases can be backed up - the current one is used
- Backup directory names are based on timestamp.