Remove redundant left spacing from li

I was adding left spacing to the li element in 3 places; margin-left of
the ul, padding-left of the ul and margin-left of the li.

I'm now only using the margin-left of the li. It's not causing any
scrollbars in Chrome (even on line-wrapped li's). Numbers over 100 go
out beyond the left side of the elements. That will cause problems in
layouts where that overlapping will be a visual problem. Maybe adding
spacing to the ol would be better?

For now, it's better.