in details panel, count connections only once
in details panel, count connections only once

Fixes #1842

alban/scope,alban/scope,weaveworks/scope,alban/scope,kinvolk/scope,kinvolk/scope,weaveworks/scope,kinvolk/scope,paulbellamy/scope,paulbellamy/scope,weaveworks/scope,kinvolk/scope,weaveworks/scope,paulbellamy/scope,paulbellamy/scope,alban/scope,alban/scope,paulbellamy/scope,alban/scope,kinvolk/scope,paulbellamy/scope,kinvolk/scope,weaveworks/scope,weaveworks/scope