Finish converting the delegation/notify scheme so the root content node does its own layout of the right content, rather than receiving and surgically implanting copies of the layed-out content from the subnode DOMs.
Finish converting the delegation/notify scheme so the root content node
does its own layout of the right content, rather than receiving and
surgically implanting copies of the layed-out content from the subnode
DOMs.

Change RootContentNode.authenticated(), mostly to reflect that the content
is not being passed back, so the only stuff passed back is the response in
case of error.

SpiderOak/so_client_html5,SpiderOak/so_client_html5