Having a mix of settings with and without subcategory makes the 'Editor'
section stand out with a weird UX, as instead of simply being a foldable
section like the others, it also holds its own top-level settings and is
therefore selectable.
This wasn't the case in 3.4, and is fixed in 4.0 by refactoring, so for
3.5 we should preserve the 3.4 UX, even if it's not the best.
- akien-mga
acd4a01b8c