The old easterhegg pages from 2003, 2005, 2007, 2009, 2011 are served on the
easterhegg.eu domain and all old subdomains under hamburg.ccc.de
redirect to the corresponding pages under easterhegg.eu
Make next.hamburg.ccc.de hamburg.ccc.de and add redirects to handle URLs
of the old website deployment properly.
Also redirect the old spaceapi endpoint to the new one.
Add staging.hamburg.ccc.de for hosting upcoming changes (PRs).
Also give it a robots.txt, since its contents don't need to show up in
search engines.
Add www.hamburg.ccc.de and let it redirect to hamburg.ccc.de.
