WIP Update UI

[jessicaguo]

Figuring out more but going slowly. Got the renderUI working so that frontvalue is bounded by boundaryrange

TODOs:

• [ ] Figure out bslib::nav_show and nav_hide to add/subtract the 'Custom' tab depending on dataproduct
  • Toy example works (see notes/), but doesn't work in app
• [ ] Try shinyjs::show and hide to add/subtract the 'Stratification' and 'Peak Bed Stress' cards
  • Toy example works (see notes/), and currently can be used to remove individual UI elements that have ids. But does not seem to work on the div

[keatonwilson]

@jessicaguo Do you have some time to work through the merge conflicts before I review? Given the rapid dev on this stuff on your end, I think you're better equipped to handle what should be kept and what should be ditched.

[jessicaguo]

@keatonwilson Done! I just kept all of the new stuff. Looks like main is now merged into this branch? Hopefully it helps you debug my remaining issues