Simplify the howto on DCOs
I think this improves some of the working, and provides a convenience link from the recommendations
Some things that I'm still uncomfortable with:
- The howtos on running an open-source project are really nested, and hard to find. Would be good to have a how-to for each topic instead.
- DCO on gitlab - how does
--signoffsit from a legal perspective? - Are there less painful ways (signoff is painful, and I doubt that it really has any legal advantage over a simple notice in the readme / MR template)