Shop facelift

[lucca65]

What we have
Our shop is now one of the few interfaces we haven't improved in a while, it surely needs some improvements

Proposal
As part of our efforts on #622, we currently are improving our elements to be more accessible and visible, the idea is to follow the best we can the designs on https://www.figma.com/file/rT5DMvPAtvbHSxNBwQENDM/New-shop---v1?node-id=1672%3A6427 without having to rely on backend changes, at least for now, as we will be recreating the shop there without relying on the blockchain.

Why
Shop is really simple and our users are needing better legibility, usability and features

How
By following designs here: https://www.figma.com/file/rT5DMvPAtvbHSxNBwQENDM/New-shop---v1?node-id=1672%3A6427