Create a "torproject" Docker organisation

We should create an organisation account on hub.docker.com to publish our official Docker images; for example our obfs4 bridge image. Unfortunately, the organisation "torproject" already exists and it's not clear who owns it.

Docker's FAQ says:

All Docker IDs are first come, first serve except for companies that have a US Trademark on a username.

If you have a US Trademark claim on a name, open a support ticket and include:

• The username you wish to claim
• Proof of US Trademark on the username

I filed a support ticket referencing the two trademarks that Tor has registered in the U.S.: 3,465,433 and 3,465,432. I'll update this ticket once I hear back. If Docker's support is unable to help us, we should ask around (e.g., on the tor-project@ list) if anyone knows who owns the "torproject" account.