http://bugs.dwscoalition.org/show_bug.cgi?id=5088

Changed the class for icon comments in the icon selector from "comment"
to "icon-comment" in both the jQuery and CSS. This fixes a display
issue with the icon selector on site-schemed entry pages.
Merge pull request #423 from lucymclaughlin/5088-icon-browser

http://bugs.dwscoalition.org/show_bug.cgi?id=5088