Page-based autoscale feature

[luckyTomas]

Autoscale should rescale graphs every time we use zoom in/out, time slider. When viewing long records with many artefact range saturations this feature is essential.

[cbrnr]

Good idea. If I understand you correctly, you would like to have an autoscale button that works on the basis of the signal that's currently shown? Right now, autoscale always works on the complete signal, but if a signal varies substantially over time then a page-based autoscale would be helpful.