Consider rebooting podium workstations nightly

[jdreed]

We should consider throwing podium/lectern workstations in a separate container^{Wcluster, and maybe have them reboot nightly at like 2am, or something. Even with the "Log out" gnome-screensaver functionality working, I think podium workstations should be ready to go, because if they need to reboot to finish logging someone out, they could get caught taking an update.}