Improvements and fixes

An inverter that sends nothing now reads as "Inverter not communicating" rather than as an outage. The alert for failed components now follows them as they drop out and come back, with a notification at the start and on recovery.

• An inverter that sends nothing, and the combiner boxes behind it, now read as "Inverter not communicating" rather than as an outage.
• The alert for failed components now follows them as they drop out and come back, with a notification at the start and on recovery.
• On a plant's "Activity" page, an inverter or combiner box that keeps producing far below its expected model now gets its own event.
• A battery with a power converter now delivers its data to the plant's battery views.