Add prefix and suffix to enumerated lists

I think by default in ol, the browser adds a period after the number like "1.", "2." etc, but I can't get css to generate the dot if suffix doesn't exist...  I tried `attr(data-mark-suffix string, '.')` and `attr(data-mark-suffix, '.')` both don't seem to work.

In body.coffee, I added my own condition `if @owner.get('loaded') and @model?.get('loaded')` instead of the one on line 51.  This is because `@model?.get('active')` is never true and my code didn't get executed.