Changes:
- Installed all security updates (see manifest for package versions).
- Install security updates on firstboot (except when running live).
- Bugfix: Updated apt preferences for auto-security updates (LP#550307).
- Trick webmin into not checking for upgrades (managed by apt).
- Updated di-live mysql mechanism and secret regeneration.
- Included latest version of inithooks and updated scripts.
- Included wget as per common request.