Improvements and fixes

Export templates now carry their metrics, a search and a copy action in the list.

• Export templates now show their metrics in the row, and the list offers a search, copying a template's ID and a confirmation before deleting.
• In the export, metrics are always listed in the same category order, with energy and power first.
• The export now offers "Curtailment Losses" and "Technical Loss Energy" in place of the two earlier energy loss entries.
• Opening a device's web interface no longer sends the browser to an address outside Mirox.