Fixes:

- reset sudo cache before caching
- add user warning
- print dots for adm user creation
- ask user to change password
- fix order (don't set user policies unless admin user is created)
Add configuration variables.
Use applescripts to display user dialogs for better user comprehension.
Remove debugging.
Documentation - todo and known isues.
Ensure return back to terminal after dialog.
Remove output file after printout
A bit of apple script cleanup.
Merge pull request #3 from Coiney/hotfix/expired_password_lockout

Hotfix/expired password lockout