Proxy repositories should include their remote URL in the repository view

As a developer, I would like to be able to view the remote URL of proxy repositories, so that I can know exactly what they are for.

Details

Presently, it is not possible for non-administrators to view the remote url of proxy repositories. This provides a poor user experience, and—especially with a large number of repositories—necessitates documenting what each one does in a separate place.

Proxy repositories should show the remote URL on their page so that users can make informed decisions about what they're using. Additionally, proxy repositories should be searchable by their remote URL so that users can easily find suitable internal repositories.

Note: It's possible to grant users access to this information with the nx-repository-admin---read privilege, however, this is far from an ideal solution.