Improvements and fixes

Inverters count as communicating after data within the last hour, hidden components leave totals and reports, and the production page shows data availability per inverter.

• Inverters count as communicating when they delivered data within the last hour; the production page's inverter table shows when each was last seen.
• The production page's inverter table shows data availability in daylight as a percentage ring; a reading counts only when power is above 0 W.
• You can mark an inverter as hidden in its details; hidden components and everything beneath them leave plant totals, the analysis table and reports.
• The components page flags inverters without data for 1 hour and combiner boxes and strings without data for 25 hours.
• The monitor opens an overview of a plant's data loggers with status, and the production page shows the data logger each inverter reports through.
• A plant's production status now distinguishes offline, unknown and overproduction, and an info icon in the dashboard and the monitor explains each status.
• The production and analysis graphs hatch periods with snow on the ground and name it in the tooltip.
• The analysis page's tables add "Energy Loss" and "Efficiency" columns, and "Energy reference", formerly "Digital Twin", shows measured divided by simulated energy.