the wiki_edit_flow.svg file is slightly changed to make the box
designate the server boundaries so it can be reused in a coherent
manner in the other graphics.
the distributed_wikis page still needs an overhaul to clarify it's
about the third and fourth setups, but that will be easier to do in
separate commits.
spalax
Louis
Antoine Beaupré
Joey Hess
Joey Hess