User-agent:
Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1
get_trophy_data() has no return value for the case where the
accomplishment is not yet completed, so I think it defaults to None.
Should it be returning an empty dictionary instead? At a minimum, I'd
like to explicitly return None in that code. (I can whichever as part
of some other test changes that I'm working on).