Copy page

We removed the copy button from the library page since we would have to duplicate a lot of the logic there.

But we want to provide users browsing the library with the option to copy/remix a resource from the library.

## The idea

Users browsing the library would have a button that allows them to "Remix" a content to adapt it to their need, re-use it for themselves.

This button is a link that opens a copy page in the builder interface.
It lets you choose where you want to remix the resource.