Graph display - scale, gridlines #19
Description
Currently, the scale on the graph view is auto-computed based on the min and max of the sensor temps shown, and the dotted gridlines are unlabeled, but correspond to I think 10C (and 18? F) and 1 minute. I think it would be nice if we could manually specify the range of the y-axis of the graph (possibly with allowing it to expand if a new sensor goes out of the range, if that's easier) similar to how we can specify the range of the x-axis through Monitoring duration. I also think it would be nice to have the dotted gridlines labeled with their corresponding temps/times, because I think it would make it easier to read at a glance.