Updated openstack/openstack
Project: openstack/sahara  ef6f1f0146ebad0b7927442c87b312eb312e8ce0

Sahara UI panels configuration docs updated

A separate guide page added with UI configuring instructions.
The link is placed as #9 in the installation guide.

Partially Fixes Bug: #1371357

Change-Id: I51eb52b4cca4987fb9b88f9f3f9187279a81b4df