Boxing / zoom based graph scaling where appropriate

[enodios]

It would be nice to zoom into the spectra y-axis because the noise is pretty expansive.

[asarnow]

Currently TROA graph is fixed at [-1, 1]. Should first revert autoscaling and test if outlying values still cause bad scaling after NaN / Inf graphing fixes and delta OD numerics improvements.

Then allow user to scale TROA graph by boxing - but clear the graph afterwords. Double click to restore autoscaling or fixed bounds for next draw?