Urban Dictionary updates

Standardize usage of InfoBox so the expand/collapse works
Converting to use the info template group
Point InfoBox links to DDG (This follows convention of other cases where we have links in the InfoBox, the links point to DDG URL's).

Right now we just don't have the ability to customize the appearance of items in the InfoBox. @chrismorast is working on a new design/interpretation of the InfoBox that will look very different. In the meantime it's easier if this can just follow the existing conventions and then we revisit any UI changes once we have an updated implementation of the InfoBox.

![screen shot 2014-12-22 at 9 47 44 am](https://cloud.githubusercontent.com/assets/126358/5526343/5afd3be6-89c0-11e4-82b7-e44f8e0e5b84.png)
![screen shot 2014-12-22 at 9 53 40 am](https://cloud.githubusercontent.com/assets/126358/5526357/71cd0cb6-89c0-11e4-80a6-161b03a1fac5.png)

@MariagraziaAlastra @sdougbrown @jagtalon