Comment 1 for bug 877130

Charline reports that this has been a common problem in usability testing of USC in Ubuntu 12.04 beta. "Every one I've seen so far, have tried to open the category by clicking on the word 'games' and not on the arrow beside it." So I'm bumping this up to Medium, and I've made explicit in the specification how the category headings should work. <https://wiki.ubuntu.com/SoftwareCenter?action=diff&rev2=618&rev1=617> See also bug 617435.