Ability to filter in function of the connection state

[QuentinRoy]

Virtually every app first render function includes something of the sort with reacolo:

if (!this.props.isConnected) {
  return <LoadingView>Waiting for Ecology</LoadingView>;
}

Maybe isConnected should be included as part of the context so that it can be easily match against.

[QuentinRoy]

If clientRole is part of the context, then isConnected should be as well.