Add BIOS descriptions to the hardware schema
Merge pull request #16 from piojo/bios-hw

Add BIOS descriptions to the hardware schema
Clean up the add_repositories function

Raise errors if the repository templates don't exist. And make the
function a little bit preatier and easier to understand.

Fixes #18.
Merge pull request #21 from piojo/repository-fix

Clean up the add_repositories function
Merge pull request #8 from quattor/master

Update