Catchlist_todo

Both on the reports page and the session page, the session list component should have a nested/collapsible list that lets you drill down to sessions like so:

year > season > month > week > day

eg you open up the year and see however many seasons have sessions in them, and you can expand one of those to see however many months within have sessions, etc.

Despite it being on the reports page and dealing with sessions, I think this is a commitment list. We can hardcode instances of it to display only sessions or whatever, but viewing commitments in this way is going to be useful beyond sessions, and sessions only feel like the primary entity we're dealing with because they automatically have commitments created when they are created.