Expansion indicator triangle not clickable

[hotsphink]

If you want to expand a section, you can hover over one of the triangle twisty things and it'll light up, but clicking on it does nothing. Clicking on the label works. Both should work.

[euank]

Note that it's the use of css to fake the list bullet styling that does this ultimately. That hack is here: https://github.com/glandium/tabstats/blob/v0.1.6/abouttabs.css#L92-L95

[glandium]

I reverted that hack from dc287de in 18b5d4f, but that didn't fix this.

[euank]

Indeed, I misremembered what the solution was (moving the handler from span -> li instead).

I investigated and almost fixed this once before, which is why I felt confident in my assertion.. even though it turned out I totally misremembered the details