Remove react-digit-components dependency

[molleer]

RDC is dead! Long live material ui!
RDC is used in several locations, some components should be migrated to this reop since I see them as still useful. But everything related to styling should only rely on material ui and css. Things which could be copied from RDC includes translations hook and other providers.

One of the most annoying things to migrate will be the user input forms 😢

[simon-wg]

It's in the works 😄 we're looking at a lot of changes to the frontend