Consolidate the numerous Jhbuild guides that GNOME offers
@aklapper
Submitted by Andre Klapper Link to original bug (#742282)
Description
We have numerous Jhbuild guides and it requires to ask new contributors on #gnome-love which guide they followed. It's confusing, at best, for the first time experience. Might also be something that Engagement is interested in.
This should be consolidated (list not necessarily complete):