message: Improve info tooltip for "Idle Nodes" graph display option.
diff: @@ -285,8 +285,10 @@ class GraphSettings extends React.PureComponent<GraphSettingsProps, GraphSetting
  onChange: toggleIdleNodes,
  tooltip: (
  <div style={{ textAlign: 'left' }}>
  - Idle nodes are orphan nodes, for defined services, that have never received traffic. Disabled by default to
  - provide cleaner graphs. Enable to help locate unused, misconfigured or obsolete services.
  + With "Idle Edges" enabled this displays nodes for defined services that have *never* received traffic. With
  + "Idle Edges" disabled this displays nodes for defined services that have not received traffic during the
  + current time period. Disabled by default to provide cleaner graphs. Enable to help locate unused,
  + misconfigured or obsolete services.
  </div>
  )
  },
  