Currently translated at 100.0% (2 of 2 strings)

Translation: XWiki Platform/Main.WebHome
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/main-webhome/de/

* Fix dep version conflict for SLF4J

+ drop the OOB support for Jetty 9.4.x
+ simplify Jenkinsfile since master now builds with Java 11

Currently translated at 100.0% (2 of 2 strings)

Translation: XWiki Platform/Main.WebHome
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/main-webhome/ru/

* Don't disable WebSocket support.

XWIKI-18600: Refactor the security modules organization, add a Security Config component and improve some templates
* Fix an enforce-upper-bounds error

XWIKI-18600: Refactor the security modules organization, add a Security Config component and improve some templates

* Enable WebSocket support in XWiki Standard

XWIKI-18624: xwiki-tomcat9-mysql postinstall fails at upgrade on Debian when the tomcat9 service is stopped and disabled

[Misc] Replace the zip flamingo resource artifact by a jar one so that we can write integration tests for templates in the flamingo skin
* Remove unneeded dependency which is actually causing conflicts (brings legacy and non legacy deps leading in duplicate classes)

[Misc] Replace the zip flamingo resource artifact by a jar one so that we can write integration tests for templates in the flamingo skin
* We don't need the extra dep anymore since it's inherited from the minimaldependencies module.