More tools for admin reviewers

# TL;DR
We are implementing some of the requests from #863 (@msheskin) in the current shape (~8/2022); maintaining the other ideas he had here for future consideration

# Narrative
As an admin or study reviewer, I am losing track of which studies in the admin review queue are the highest priority for my attention. This is because we have many more studies, and the displayed information does not capture the information I need to make my decision.

Now that we have external synchronous studies, I might schedule a live review session (e.g., on Zoom) at the researcher's earliest available time 2 weeks in the future, and now there is nothing more for me to do with it in the queue, but it will capture my attention as being "old" and demanding my attention.

# Implementation Notes

I think implementation for this one is trickier and has more potential solutions, and I'm not sure how difficult different ones would be to implement. One idea that comes to mind is having a field I can toggle to indicate a live admin review session is scheduled, and then it moves to a different tab OR to the bottom of the list.

Start by reviewing issue #863 and the current admin review queue implementation. Compare possible ways to mark a live review session as scheduled and determine whether it should move to another tab or the bottom of the list. Done means an agreed implementation exists for prioritizing scheduled reviews, but this issue does not name files or tests.

Written by the indexing model from the issue text.