Add ability to edit measurement database entries

[Kyle Gabriel]

Add admin page to edit measurement database entries, useful for correcting issues.

[Tom Mitchell]

This would be tremendously useful to remove outliers, calibration values, etc.

[Kyle Gabriel]

I was referring to the database entries that defined measurement information, such as unique ID, unit, etc. of a measurement of an Input, Output, Function, not the measurements themselves. Influxdb has an interface of its own if you need to modify or delete specific measurements.

[Tom Mitchell]

I see. I have had some occurrences of stray measurements that are way out of whack. I would love the ability to delete a single measurement without going through the learning curve and/or configuration complexity of learning Influx tooling for the RPi or enabling remote access to the database from the network. But I do understand that you do not want to reinvent the wheel here.