[Valloric]

Originally Posted by kovidgoyal

Since you are using sphinx, might I suggest a few tips? Like adding a sidebar to aid navigation, see http://calibre-ebook.com/user_manual/

But there is a sidebar with a TOC.

It's on the right. It's just that it's not shown when you're looking at the contents page since that already is a TOC. But when you go to, say, the Epub Overview, you can see the sidebar TOC.