![Akihiro Motoki](/assets/img/avatar_default.png)
After switching to openstackdocstheme, the left side menu lists all specs and it is no longer useful as navigation. This commit reorganizes the doc structure and toctree so that the toctree is easy to read with openstackdocstheme. Change-Id: I47a8c28c038bf2022855a81f6073f4b5f4b01266