Re-enable featured-list styling.

When embedded in old site, the calculator used the convenience class `gte-ie8` to conditionally serve a fancy featured-list style, using `counter` and `counter-increment`.

Since this class doesn't exist in frontend, we stop relying on this class, and instead use `$responsive` to conditionally serve the fancy style. Can anyone think of a more 'semantically correct' way of doing this within Dough? There doesn't seem to be a Modernizr test for the `counter` properties it relies on.

In case you were wondering, this is what it looks like in IE8 if the fancy style is served anyway:

![screenshot 2014-10-21 14 51 47](https://cloud.githubusercontent.com/assets/1007202/4719406/70022d48-5929-11e4-9911-33f37be2e01c.png)