Both tabs held one group of the same name as the tab, so every entry sat a level
deeper than it needed to and the group heading said nothing the tab had not
already said. The overview now sits above the real groups, which the tab can do
once it uses pages rather than groups.
Demos has no categories at all, so its four pages are simply flat.
The embedding overview is renamed from Overview, which would otherwise have been
the second entry with that label in the same sidebar.
Jack Ye
7b112debca