Improve display of unit flags, do not show `fuzzy` flag

Relates to #275 and #276 and hopefully addresses both. It's quite a bit of code for this small feature now, but I hope it won't be called that often.
Not sure how to update the stores in question either, I tested this by repeatedly applying changes to strings. If there is a way of "refreshing" what is displayed without changing the translation, should it be triggered for this change?