Web console: only show "no services" message if overview empty
Web console: only show "no services" message if overview empty

Don't display the "No services to show" message if we're showing other
content in the overview like an unserviced deployment of an unserviced
pod.

openshift/origin-web-console,openshift/origin-web-console,openshift/origin-web-console,openshift/origin-web-console