Add instructions for "normal" user creation
Add instructions for "normal" user creation

Added instructions for adding a "normal" user named "demo" with access
to the dashboard but no administrative functions. Restructured the
section into procedures to support this and make the task split
clearer.

Change-Id: Iebfec133e44447fad2149ea815c749468b57c763
Closes-Bug: #1266391

potsmaster/openstack-manuals,Akasurde/openstack-manuals,kairoaraujo/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,gongysh2004/openstack-manual,Akasurde/openstack-manuals,potsmaster/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,saeki-masaki/openstack-manuals,openstack/openstack-manuals,kairoaraujo/openstack-manuals,saeki-masaki/openstack-manuals,gongysh2004/openstack-manual,openstack/openstack-manuals