MB-11262: bucket details issues

Change-Id: Ia1aa0d1fd9a03aebacc92f09022241a17754741f
Reviewed-on: http://review.couchbase.org/38009
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>