(cherry picked from commit 13a77d05)

  * Improve test to actually check that XWikiServer page isn't created
    during the build of demo package

  * Enable BiDi for both firefox and chromium

  * Change condition of the test to make it more reliable

* Prevent Prototype.js from overriding Array.from, second try

  * Provide a test to check that mandatory document initializers are
    properly declared for the demo package
  * Rename and improve the test
  * Put other missing modules

* Reload the image if it appears as broken.

  * Add missing dependencies to ensure needed xclass are there in the
    demo package

This reverts commit a3f67585.

Currently translated at 100.0% (281 of 281 strings)

Translation: XWiki Platform/XWiki Platform - CKEditor - UI
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-platform-ckeditor-ui/de/

* Enable the Source button but disconnect the user from the realtime session while they are viewing / editing the source, and try to reconnect them when switching back if there were no source changes, or there's no one else in the realtime session.

XWIKI-20616: Update jstree files and remove reference to throbber.gif

* Improve the CSS selector

Restore XWiki customization accidentally remove in the first attempt to update jsTree file to jsTree version `3.3.16`.

* Updated the translations for the page not exist message.
* Refactored some of the style related to inline link underlining in general.less

Currently translated at 76.9% (3457 of 4491 strings)

Translation: XWiki Platform/XWiki Core Resources
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-core-resources/zh/

Currently translated at 100.0% (16 of 16 strings)

Translation: XWiki Platform/Help.Translations
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-platform-help/help-translations/pt_BR/

XWIKI-22120: Live Data links are underlined although 'Underline links' setting is set to 'Only Inline Links' (#3085)

* Added a rule to cover breadcrumbs in livedatas.
* Added comments

Update dependency org.xwiki.contrib.editortool:editor-tool-highlighting-ui to v4.8 

* Changed the SSX type to LESS
* Replaced the former hard coded colors with values from the colorTheme.
* Added codestyle updates for the SSX - one empty line between adjacent style blocks.

Currently translated at 100.0% (16 of 16 strings)

Translation: XWiki Platform/Help.Translations
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-platform-help/help-translations/de/

  * Make methods saving the ratings synchronized so that only a single
    thread can save or remove a rating

 * Check server side if the page exists before adding a rating
  *  Hide the rating UI when the page does not exist
  * Provide new DocumentReference#extractReference API to extract
    DocumentReferenec from an EntityReference

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Co-authored-by: Simon Urli <simon.urli@xwiki.com>