CBLT-178:  add icon to s3 page

Change-Id: I8998d0984eebb8b4e656d4b4b8d2e64b200707c9
Reviewed-on: http://review.couchbase.org/39611
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>