Upgraded Drupal to 6.16, modules as well

Drupal has been upgraded to 6.16 to address some security issues:


Modules upgraded include:

* event
* captcha
* views

Themes upgraded include:

* zen

But, zen_classic was removed from 1.1, so I added the 1.0 version back in (removed because of this http://drupal.org/node/426750). So, it will continue to show that the theme needs upgrading until we find a new them.