Blender Git Loki

Outliner: Enable render visibility column by default

The render visibility column in the outliner should be enabled by
default. This change makes it more obvious which objects will be
rendered which can be misleading when only viewport visibility toggles
are shown by default. This commit enables the render visibility column
in all existing and new Outliner editors.

Differential Revision: https://developer.blender.org/D10365