Latest Data Page coordinated zoom (v 0.9.10)

[jonathancallahan]

Right now, each plot can be zoomed individually. It would be much nicer if all three were coordinated so that zooming in/out on one plot affected the others.

This can be simplified by specifying that interactivity only occurs on the A/B plot and that the humidity and temperature plots follow whatever is chosen in A/B.

I see two components to this task:

• modify "brushing" to be time-axis zoom only (y-axis continues to automatically adjust to existing values)
• humidity and temperature plots adjust time-axis to match whatever is seen in A/B plot