Bounding grid updates on properties panel change of scale

[kephale]

Check that the bounding box is regenerated when an object is rescaled

[kephale]

This is probably a scenery thing @skalarproduktraum

[kephale]

The problem is that generateBoundingBox in scenery doesn't use scale factors

[kephale]

This is still a problem but it manifests differently.

To reproduce:

1. Add an object like a sphere
2. Toggle bounding box of the sphere
3. Set the scale of the sphere

The bounding box adjusts for the scale, but the font and legend does too. See:

[kephale]

@skalarproduktraum @moreApi I suspect this is the kind of thing that we want to solve in scenery.

[moreApi]

I think we should make the text "scale resistant". At least for non isomorph scalings.

[kephale]

Yeah, in this case I'd hope for the text to say isotropic, and adjust size with the smallest change in scale for the plane the text is rendered in.

It might be worthwhile to do that for the tic marks on the bounding box, because they won't be symmetric across the whole BB this way.

[kephale]

@skalarproduktraum should we make a corresponding issue in scenery?