Boss drum, motivating rhythm of life with the
healing, rhythmic synergy.
More seriously, this patch re-arranges the
documentation structure to conform to the
structure outlined in [1].
With it, some changes are made to effectively
transition the links and simplify the sphinx
configuration.
The Mitaka/Liberty documentation links are
removed as they are no longer available.
[1] http://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html
Change-Id: Icc985de3af4de5ea7a5aa01b6e6f6e524c67f11b