* Cleaner API doc reference for compile call

* Add a useful table for nGraph namespaces

* Remove layout namespace

* Show exploding kernel problem on illustration like IEEE preso

* WIP branch for new documentation restructuring that is a huge pain

* Fix the doc reorg mess

* Fix underline

* List of passes disclaimer note

* Update disclaimers on README

* More cleanup of doc reorg

* Update core docs

* Update overview on core

* Add PR feedback

* Get rid of all the gazillion of doc build errors from rearranging stuff

* Add section on tutorials

* Update branch

* Cleanup intro

* Add better detail to overview

* Revise buildlb instructions and add better title for contributing to doc

* Note about unit tests

* Editing

* Update core overview namespace table and fix more broken links due to ToC changes

* Update normalized boolean build defaults

* Update for PR 2507

* Incorporate new PR feedback review