Having knowledge public with Version 3

As some of you may have noticed, upgrading to knowledge version 3 made a big impact by making it impossible to have the a knowledge base "real" public. What I mean with real public is that user can use the knowledge base without having to log in first. This was possible in version 2, but right now in version 3, the user need to be logged in, even if the user doesn't have any roles.

This was a critical problem for us since we had a deadline to migrate our current knowledge base into Servicenow. Here is the solution.