Major new UI redesign

[manyoso]

This is a draft PR. It reflects a lot of major new ui redesign work that follows the new FIGMA design made by Vincent. It also contains a lot of changes to the way localdocs works.

This is now rebased on top of main and conflicts resolved. This is still a monolithic commit that needs to be broken up into smaller pieces in order to aid proper review. I'll be working on that now and force pushing as I do so.