* Add more details: name & namespace, service name
* Refresh the view on replicas change
* Overall design refresh of the left menu

This is to be able to run when the application is rooted not at the
domain name. E.g.,
http://localhost:8080/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard/#/replicasets

Also, make some changes to the api to allow for omiting specification of container.

Added check to prevent display of replica set list page when there are no replica sets.