FDRS authentication method change

[GergiH]

Reason

FDRS API will change its authentication method to require an API Key.

To Do

• Change backend for testing to use the new method
• Update the production ENV vars to include the production FDRS API key
• Change backend for production, branching off from master as a hotfix (in URL, .info -> .org)
• (Optional) Change frontend query-external.js if the part countries.js will be needed

[GergiH]

The backend changes were deployed. @batpad should we keep this open for the frontend changes of this, or can we close this? All relevant parts on the frontend are commented out atm, I don't know the reason for it though.