Updating dashboard user guide post-reorg
Updating dashboard user guide post-reorg

Given that the sahara-dashboard has been reorganized,
I have updated the content of the user guide so that it
accurately reflects the current state of the UI.

Change-Id: I43167397929fa9a5a6715a83fa25f4a0cdd98e05
Partial-Implements: bp reduce-number-of-panels

egafford/sahara,openstack/sahara,openstack/sahara,tellesnobrega/sahara,egafford/sahara,tellesnobrega/sahara