Fix distribution-bar bugs found with live data
Fix distribution-bar bugs found with live data

- Key data using datum label
  (when something goes from number, to zero, to number again)
- Retain active and inactive classes across data updates

burdandrei/nomad,hashicorp/nomad,burdandrei/nomad,burdandrei/nomad,dvusboy/nomad,dvusboy/nomad,hashicorp/nomad,hashicorp/nomad,dvusboy/nomad,nak3/nomad,nak3/nomad,nak3/nomad,hashicorp/nomad,nak3/nomad,dvusboy/nomad,nak3/nomad,burdandrei/nomad,nak3/nomad,dvusboy/nomad,dvusboy/nomad,burdandrei/nomad,nak3/nomad,hashicorp/nomad,hashicorp/nomad,dvusboy/nomad,burdandrei/nomad,burdandrei/nomad