MB-11995: MB-11996: show roa user name in account manager section

Change-Id: I1d43d7f1ed8a296f16930a16298246ad5fe292f9
Reviewed-on: http://review.couchbase.org/40747
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>