Blender Git Loki

UI: Split Output Properties Dimensions panel

I remember when we originally decided on the Dimensions panel,
one of the reasons we combined time and image size properties in the same panel,
was simply because the 2.49 and previous UIs used fixed-size panels,
so we often put two categories of properties inside a panel, using two columns.

Now that we no longer do this, we could clarify and simplify some panels
by splitting them, such as the Output > Dimensions panel

{F6753690}

Reviewed By: brecht, pablovazquez

Differential Revision: https://developer.blender.org/D4440