TSV same sensor type needs identifier

[neilh10]

When using a number of the same Sensor Type, and bringing up a Time Series Visualization page and adding more series to the graph - the individual graphs are not uniquely identifiable back to the source sensor.

All that is identified is the generic type of sensor and the individual UUID. See snapshot below for 5 temperature sensors - 4 of them DS18s

For the front page with mini-TSVs, the notes section can be used to identify individual sensors within a group of the same sensor type. eg DS18a DS18b DS18c
For the TSV page I would expect that the induvial graphs be identified with a human readable identifier - eg a sensor nickname.

The above was derived from a test site https://monitormywatershed.org/sites/nh_temp5/