copy registration.rnc from the old registration
updated RelaxNG schema
initial AutoYast support - config time only
refactoring
AutoYast support - write (do registration)
changes

- 3.1.22
code review fixes
use Popup.Feedback
removed duplicate require
Merge pull request #29 from yast/autoyast_support

Autoyast support, set server URL in the AutoYast profile (FATE#312433)