Collapsible schedule headers

[gburgett]

On the Schedule tab, allow the list items to collapse under the headers.

• [ ] When today is Tuesday, the Monday items should be automatically collapsed under the Monday header.
• [ ] Clicking on a header should expand those items
• [ ] Clicking the header again should collapse those items

Don't worry about animations, we can tackle that later if it's necessary.

Note that the auto-scroll logic has to calculate the size of the list, this will need to be updated to account for collapsed headers.

[gburgett]

This is complicated due to this code: https://github.com/watermarkchurch/clc-app-v2/blob/master/apolloschurchapp/src/tabs/schedule/Schedule.tsx#L237