Improvements and fixes

You get a rebuilt production page, remote access to several connected sites per plant, deletion of manually added strings, and combiner-box figures that open again.

• The production page is rebuilt with performance ratio per source, an inverter table, site specifications, and a day curve; unreachable periods show "Expected (no connection)".
• Select manually added strings on the components page and delete them; a confirmation asks first, and detected strings are never removed.
• A combiner box's figures open again instead of failing with an error.
• Times from late yesterday no longer show as today; dates written in words now follow the calendar day.
• A plant's remote-access server now serves several connected sites: manage subnets, keys and status on the "Peers" tab; conflicting or unadded subnets are flagged.
• Removing a plant from an organization's remote access, or deleting that remote access, no longer stops the plant's on-site agent.
• Deleting a remote-access server or a connected site now asks you to type its name; the warning tells you the keys are gone for good.
• Security updates for third-party components.