Zoom in on early dates

[ScientiaPotestasEst]

Hi

I'm sorry to bother you regarding such an old project as this.
But I just installed it and noticed that the zoom function only works when you try to look at more recent runs (changing the "From:" date).
If you instead wish to look at older runs (changing the "To:" date) then the graph is simply cut off, but no zoom is applied.

I hope that this is not too much of an issue to fix if you feel like looking into it.