XWIKI-22411: Image inserted with height or width parameter isn't displayed in the orientation provided by EXIF data

* Use Thumbnailator to read the image which correctly interprets the
  EXIF data.
* Add a test with a test image.

(cherry picked from commit 5f134afb)

  * Perform a call to checkWidgets whenever something is pasted, to
    ensure macros are properly handled

(cherry picked from commit 8a4d0d79)

(cherry picked from commit 12037392)

Co-authored-by: Alex Cotiugă <alexandru.cotiuga@xwiki.com>
Co-authored-by: Dorian OUAKLI <132468278+douakli@users.noreply.github.com>
Co-authored-by: Gankov Andrey <gav@qsolution.ru>
Co-authored-by: LucasC <lucas.charpentier@xwiki.com>
Co-authored-by: Mariana Batista <mariana-batista99@hotmail.com>
Co-authored-by: Marius Dumitru Florea <marius@xwiki.com>
Co-authored-by: Simon Urli <simon.urli@gmail.com>
Co-authored-by: Simon Urli <simon.urli@xwiki.com>
Co-authored-by: Simpel <git@simpel.cc>
Co-authored-by: Thiago Krieck <thiago.krieck@xwiki.com>
Co-authored-by: Thomas Mortagne <thomas.mortagne@gmail.com>
Co-authored-by: slauriere <slauriere@xwiki.com>
Co-authored-by: xingya1822 <xingya1822@163.com>

* Update breadcrumb PO

Currently translated at 100.0% (4501 of 4501 strings)

Translation: XWiki Platform/XWiki Core Resources
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-core-resources/de/
(cherry picked from commit aa0e2a6b)

[misc] Quick fix a failing WCAG test. The proper fix requires to move the slash options inside the slash groups but this breaks the keyboard navigation (Up/Down) that we reuse from  CKEditor's Autocomplete feature.

* Added a label to the tree toggle button

(cherry picked from commit aa2cd693)

* Add a required right analyzer for XWiki.ComponentClass.

(cherry picked from commit 1a6f1b2e)

* Simplify the code by using the contextual authorization manager.
* Adapt the test.
* Add more tests to keep the instructions covered ratio.

(cherry picked from commit 91752122)

This hopefully fixes flickering that was observed in particular on the
stable-15.10.x branch.

(cherry picked from commit e70de459)

(cherry picked from commit 6cf85359)

(cherry picked from commit ce0b43a7)

  * Really wait for the end of the drawer menu transition to perform any
    operation

(cherry picked from commit 9e4eadda)

  * The problem was only related to tests related to ckeditor and the
    handling of the confirmation dialog when leaving it, so I replaced
all that logic with a simple click on cancel for leaving the editor.

(cherry picked from commit 42f86082)

(cherry picked from commit d3ec62c2)

(cherry picked from commit ed3bb088)

* Reworked the way hiding sections work to make it easier to handle with CSS (and also avoid inline styling...)
* Added style for the rotation
* Used mvn xar:format to escape properly the new content added in the .xml

(cherry picked from commit b952bda1)

* Changed the nature of the dropdown toggler so that it can be keyboard focused
* Updated the style of this toggler so that focus is visible
* Reduced line height to avoid increasing the whole breadcrumb height by adding the 2px of margin (to fit the border) on the buttons.

(cherry picked from commit 5665afc9)

* Increased alpha on the icon, so that it would be visible enough even when not focused or hovered.
* Added a selector for the :focus pseudo class to benefit from the style already implemented for the :hover pseudo class (and improve consistency)
* Added padding around the icon so that the focus border is nice and square, not sticking on the side edges of the icon.

(cherry picked from commit 2e2aee6c)

* Added an event listener to close the currently navigated dropdown

(cherry picked from commit 4db0c5e1)

XWIKI-17966: Mention events should display the name of the wiki where they took place in Notifications (#3042)

* Added a wiki indicator to mention notifications similar to the one found in regular notifications in notification/macros.vm
* Added a test for the new template feature

(cherry picked from commit fa9b9eb4)

XWIKI-14032: The long names of submenus are showing out of the menu box (not wrapped) and the name of the submenus that use plain text and don't have other submenus don't have left margins (#3033)

* Added overflow wrap in words
* Added padding for all items
* Removed unused styles

(cherry picked from commit c17b9bd5)

* Added a condition on the style to keep it working even when the state changes.

(cherry picked from commit abecfadb)

* Removed the link if the deleted document batch id is null

(cherry picked from commit 6dc3d64b)

Currently translated at 100.0% (4491 of 4491 strings)

Translation: XWiki Platform/XWiki Core Resources
Translate-URL: https://l10n.xwiki.org/projects/xwiki-platform/xwiki-core-resources/ru/
(cherry picked from commit b6efcfe7)

  * Fix missing semicolon

* remore leftover

* remove leftover

* remove leftover

(cherry picked from commit c02ce784)

* fix merge problem

(cherry picked from commit a43e933d)

XWIKI-22367: Clicking on Allow Realtime Collaboration in Source mode leads to unexpected result (#3311)

(cherry picked from commit c2cd3496)

XWIKI-22415: JS errors that prevent adding comments or annotations when realtime editing is activated from Administration
* Limit realtime editing for the content field for now
* The save plugin can be broken by detached editor instances that are not destroyed (e.g. by showing and hiding the comment form)

(cherry picked from commit ee1b8f37)