Open Dashboard in landscape orientation

[JayJohnsonWashoeCounty]

Need to be able to force Dashboard to open in a specific orientation on mobile devices.  Example use case is an Election Results Dashboard which works well in landscape, but is terrible in portrait orientation (see attached screenshots).

It would be useful to either FORCE the display orientation of the dashboard (preferred solution), or display a message telling the user to rotate their phone...

[DavidRunneals2]

Even more useful than this would be to make Ops Dashboard responsive, so it could work and actually be functional on mobile devices. This is something that has held us back from using Operations Dashboard when there could be users on mobile devices.