Underline links on hover
Created by: robbytaylor
WCAG 2.0 requires that link hover / focus states have a non-colour designator (see http://www.w3.org/TR/2008/NOTE-WCAG20-TECHS-20081211/G183).
This would be an easy change to implement to improve usability for people who have problems perceiving changes in colour. It looks like all that would be required would be to remove lines 43 and 57 of typography.scss.
However, since the text decoration has been deliberately disabled I wanted to check that a pull request would be accepted before doing it.