Desktops: removed YubiKey config, enable Firefox AppArmor profile
site: standardize on 'lvillani' as admin login name
Group packages. Set ruby version to 1.9.3
It is zyphon.trilan, really
Laptops: enable hybird suspension
Common: cosmethic changes
Desktops: simplify playbook, install chromium
Workstations: simplify playbook, add sublimetext and libxml headers