Comment 1 for bug 1485028

I'd thought the source must have been ratings-and-reviews, but checking the API there, it (currently) has the expected averaging rating of 3 ((Historgram is [2, 0, 0, 0, 2] - 1 + 1 + 5 + 5 ) / 4). So switching back to software-center-agent project as Dobey already had.