DVR multi column sorting (sub-sorting)
When viewing finished recordings, it would be nice if you could sort by multiple columns. For instance, if I sort by title, sometimes I would like all entries with the same title to also be sub-sorted by subtitle (or start time, size, etc.) To accomplish this, usually one would first sort by subtitle, then sort by title which should then re-sort by title and sub-sort by subtitle. Or sort by start time first, then title which should then re-sort by title and sub-sort by start time. Could also be useful in upcoming and failed recordings. Probably not necessary to sort by more than two columns.