Comment 6 for bug 253334

Ordering by copyright status would require changing the indexing process as discussed someplace earlier. Ordering by date should in principle be doable by changing the solr query slightly. I prototyped something like that a while back but it didn't work reliably for some reason and there was something more urgent pending at the time, so it's been sitting around. I should get around to fixing it. (https://bugs.launchpad.net/openlibrary/+bug/133238)