Improvement to Device listing refresh behavior

[lawik]

We could switch the polling to use messages only. Product wide messages when a device is hit by:

• create
• update
• delete

Because updates can be frequent we probably want to debounce that or set a max rate of refresh to avoid silly heavy refreshing.

We probably still want a really infrequent poll just to catch any weird corner cases we don't think of right now where related data changes that could affect the filtered query.

Bonus: Disable updates in LiveViews that are in background tabs?