* fix regression
* use Java 11 compatible code (easier to merge in 15.10.x)

(cherry picked from commit 90fb91a6)

* Better fix (the page should be there for all flavors)

* Simplify the code by using ObjectPropertyRequiredRightAnalyzer.
* Add missing since-versions.

(cherry picked from commit f07073f1)

XWIKI-22471: Add a required rights analyzer for XWiki.Notifications.Code.NotificationEmailRendererClass

(cherry picked from commit 3d96bf3c)

XWIKI-22469: Add a required rights analyzer for XWiki.Notifications.Code.NotificationFilterDisplayerClass

(cherry picked from commit e70468d2)

* Add a required rights analyzer for XWiki.EventStream.Code.EventClass.
* Add a unit test.
* Replace duplicated string literals across classes by constants.

(cherry picked from commit 521a1343)

(cherry picked from commit 9bdeb82b)

* Add an implementation for RequiredRightAnalyzer<BaseClass>.
* Call the new analyzer in the document analyzer.
* Add a helper for analyzing wiki content in XClass definitions.
* Introduce an analyzer per property type and call the first one that
  matches.
* Add a block supplier provider that supports XClass.
* Add tests.

(cherry picked from commit 385bde98)

(cherry picked from commit 4d06d40b)

XWIKI-22488: Editing the paragraph using the In-place editor moves the display window to the bottom/top of the page
* There were two issues:
** when editing a section inplace, we were removing the tabindex attribute from the editable area too early, and since the realtime plugin puts the editable area in read-only mode while it connects to the realtime session, the focus was lost (to keep the focus the editable area needs to either be editable or have the tabindex attribute set)
** when connecting to the realtime session, the realtime plugin was displaying an information box at the top of the page and it was scrolling it into view

(cherry picked from commit 9fb3d668)

* Add a simple required rights analyzer that reports admin or admin and
  maybe programming right.
* Add a unit test.

(cherry picked from commit 55c5d568)

  * Revert wrong assert

* ignore Sonar false positive

(cherry picked from commit 494f8ec4)

XWIKI-21071: 'Import a XAR in a wiki' REST API is not working as expected when "backup=true" and "history=REPLACE"
* codestyle

(cherry picked from commit 6baee27f)

* add more tests

(cherry picked from commit d6fafbc6)

* introduce an (internal) extensible validation system HQL queries
* introduce a new validator based on configurable regex of safe/unsafe regex patterns

(cherry picked from commit 620256c2)

(cherry picked from commit 5c11a874)

XWIKI-21071: 'Import a XAR in a wiki' REST API is not working as expected when "backup=true" and "history=REPLACE"

(cherry picked from commit 0a2d4f1c)

Currently translated at 100.0% (20 of 20 strings)

Translation: XWiki Platform/xwiki-platform-security-authentication-ui-Translations-164x
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/stable-16-4-x/xwiki-platform-security-authentication-ui-translations-164x/de/

Currently translated at 100.0% (190 of 190 strings)

Translation: XWiki Platform/xwiki-platform-appwithinminutes-ui-Translations-164x
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/stable-16-4-x/xwiki-platform-appwithinminutes-ui-translations-164x/de/

Currently translated at 100.0% (4503 of 4503 strings)

Translation: XWiki Platform/xwiki-oldcore-164x
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/stable-16-4-x/xwiki-oldcore-164x/de/

XWIKI-22694: The output of Document#getExternalURL() in the PDF cover doesn't match the URL used to access XWiki
* The test coverage is lower on the old branches.

  * Remove labeler configuration and actions: we don't want anymore to
    automatically labels PRs coming from Weblate. See the new strategy
for translation branches in https://forum.xwiki.org/t/translations-on-supported-branches/16041
  * Provide license and comment on backport configuration

(cherry picked from commit e877cc4e)

XWIKI-13858: Inconsistency between Long Text and Content fields display in AWM wizard and entries (#3594)

* In all places where we can edit this object, we follow the userPreference regarding text editors.

(cherry picked from commit a81ba09a)

* Add missing PO method (was added on master for a separate JIRA issue).

XWIKI-22694: The output of Document#getExternalURL() in the PDF cover doesn't match the URL used to access XWiki
* Set the Forwarded HTTP header when opening the print preview page in the headless Chrome instance in order for the external URL to be computed properly.

(cherry picked from commit b1e5e4f4)

(cherry picked from commit 90a58753)

(cherry picked from commit 642cbc66)

(cherry picked from commit 04d35038)

* Added type=`button` on the edit form buttons (that are not here for form submission) so that we avoid mistakenly triggering them implicitely.

(cherry picked from commit d20f671d)

* Fix OrphanedPagesIT failure.

(cherry picked from commit ca0aa6a8)

  * Add the missing check and cover it in test

(cherry picked from commit 82aa6701)

(cherry picked from commit 358cc4ce)

* Workaround for cyclic dependency

(cherry picked from commit 47d43ab7)

(cherry picked from commit 6c9b77e4)