Added the release notes for the OpenStack UX special team.
Added the release notes for the OpenStack UX special team.

Added the release notes for the work performed by the OpenStack UX
special team.

Change-Id: Ia87e3a0d4041cb56792df0aa34f936110b0682f0
Signed-off-by: Rodrigo Caballero <e74c61adb7ade025bc8e83a25052d36636c989a9@intel.com>

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals