In the top index page of the document, some sections had actual
contents and some had only links to the contents. However, this
makes it difficult for readers to get what is in the document and
what isn't at a glance.
This patch cleans it up to simplify the top index. This patch also
renames some of the directories to follow the doc layout rules[1].
[1] https://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html
Note that the following ToDo is left for further cleanup:
* Publish the api guide and move the microversion history to
the `/api-guide` directory
Change-Id: Ideb1d5e7c74d1d564d07bac1a1e7c86c55ede873
Use whereto to test that the redirect rules do what we expect.
Change-Id: Id3a8f3b9f372ebe9176f1df917f7a6aac30a8e92
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>