Additional document sorting options

I'd like to request some additional sorting options on top of the ones that were implemented to address #1370. There are two edge-cases in particular that I've run into with the exiting sorting options: 1. Sometimes, I want to sort by reverse alphabetical order, and I don't see a way to actually do this? My specific example is that I like naming meeting notes as the date of the meeting, and I want the most recent meetings to be at the top of the list. 2. I would really like to be able to sort a set of child pages differently than the collection itself has been sorted. So, I might have a collection "Marketing" that contains a document "Meeting Notes" that contains sub-documents labeled by date. "Marketing" may have a custom sort option, while "Meeting Notes" may have a reverse alphabetical sort option. For item 2, I would be perfectly fine with this being implemented as "sub-collections" (e.g. I have a collect…