MB-12564: initial UI for node services

Change-Id: I47d39f9ccf89d0e21c1f27cf222576bcedf1ef1d
Reviewed-on: http://review.couchbase.org/42899
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>