Improvements and fixes

A plant's day graph no longer turns red for hours after a brief drop in its remote connection.

• Components now flag two more problems: producing far below what is expected of them, and sending no measurements at all.
• A plant's network devices can now be searched by what is opened on them, and filtered by device type across the whole list.
• Buttons on a plant's networking and core-data pages now match what the role may actually do.
• The API now accepts a lowercase id, a spaced id list and an out-of-range page or limit instead of refusing them.