Remember sort used on the catch-up page

**Is your feature request related to a problem? Please describe.**
Whenever I use the catch up feature I always immediately set it to sort by likes, as I follow way too many people for chronological view to be useful. It would be convenient if the site remembered the last selected sort for the catch up page.

**Describe the solution you'd like**
When I view/create a new catch up it uses the last selected sort.

**Describe alternatives you've considered**
I just click the button and do it myself, but it would be nice if phanpy just remembered.

Locate the catch-up page and its sort control, then trace how the selected sort is represented and whether the client already persists page preferences. Done means creating or viewing a new catch-up page restores the last selected sort instead of defaulting to chronological order.

Written by the indexing model from the issue text.