Just so it doesn't come as a surprise to anyone: I've done a bit of cleanup on the site. The downloads page was linking to a bunch of old releases, which we've been asked to remove from the mirroring system https://issues.apache.org/jira/browse/STORM-2956.
As the downloads page already links to the archival system, I don't think there's a reason to list out old release files explicitly, people can just click the link to the archive. I've removed documentation for outdated releases, so we now only have the documentation for the newest release branches. Let me know if this was too aggressive, and we need to restore some of the old docs. There was a https://storm.apache.org/releases.html page, that was listing releases, but nothing linked to it. I've deleted it, as equivalent information can be found on the downloads page.
