Preparing Debian 8 -> Debian 9 upgrade of the server running https://hub.consumium.org

Information for #hubizens of https://hub.consumium.org: Made backups and snapshot of the system disk. Preparing to #upgrade the server from #Debian 8.11 to 9.5. There will be some downtime (at least for a reboot for the newer kernel). Server uptime now: 355 days. Debian FTW!