* [X] MediaWiki: already worked. Done database upgrade.
* [X] Atlas: various fixes to port JavaScript outside Debian packages.
[ ] fix crash on POI creation caused by MySQL
* [X] Magazine WordPres: already worked.
* Current: ownCloud 9.0.11 (stable) PHP 7.0.33
* https://doc.owncloud.com/server/next/admin_manual/maintenance/upgrading/upgrade.html
* logical crash. Requires upgrade to ~~10.0.10 that is compatible with PHP 7.3~~
* ~~installing 9.1.8 but is not compatible with PHP >= 7.1~~
* https://doc.owncloud.com/server/next/admin_manual/maintenance/upgrading/upgrade.html
* [X] Upgraded Calendar to latest version
* [ ] Joomla!