Expired cert on dl.xonotic.org
When trying to download Xonotic from https://dl.xonotic.org/xonotic-0.8.2.zip, people get a warning.
Assigning to @Antibody since he's the only person i know has access to the server. @detrate currently doesn't and i haven't seen @divVerent on IRC in a while. We should probably give access to a few more people for situations like these.