Add ability to sort while queuing

Extensively tested on three large data sets. I used Orange Logic sort scheme "sort6" and "sort7" to get result lists in ascending and descending order sorted by Title.

Given the pervasive oddness around sorting in Orange Logic's API (problems in documentation as well as implementation) this is about as good as we can support right now.

Want me to cut a release with this included?

Automatically closed - issue fixed for 2 weeks with no activity.