Bug#275028: debian-edu-install: We should have a Education-barebone

[Petter Reinholdtsen <pere@hungry.com>]

[Morten Werner Olsen]
> I don't understand why you want this in expert mode only? Cant we
> have barebone as one of the choises in a normal install too?

I want as few options and questions as possible in the normal install,
to reduce the cognitive strain on the people doing the installation,
and to speed up the process as much as possible.

I believe only very few experts will need to install the barebone
profile, so it should not be available in the default installation
path.