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* remove test leftovers

Currently translated at 100.0% (7 of 7 strings)

Translation: XWiki Rendering/Macro transformation
Translate-URL: https://l10n.xwiki.org/projects/xwiki-rendering/macro-transformation/de/

Currently translated at 100.0% (3 of 3 strings)

Translation: XWiki Rendering/Rendering API
Translate-URL: https://l10n.xwiki.org/projects/xwiki-rendering/rendering-api/de/

  * Minor coverage change after the move to Java 11

* Add mising comment to test

* Remove @Unstable annotation from internal class.

* Transform metadata1 test into a specific test following 612437f2

* Render macro markers also for nested macros
* Extract a class XHTMLMetaDataRenderer to avoid code duplication
* Render metadata blocks
* Add metadata test to the annotated HTML5 renderer

* Verify that freestanding links are parsed correctly, too.

* Do not use @since annotation on private constant.

* Recognize mailto: links in XHTMLXWikiGeneratorListener
* Add the test case from XRENDERING-612

* Refactor BlockStateChainingListenerTest to use parameterized tests.

[Misc] Remove metadata1 from the CTS and make it a specific test since it's only used for the HTML syntaxes (and incidentally causes the other syntaxes to not be at 100% anymore in the CTS report).

Currently translated at 100.0% (7 of 7 strings)

Translation: XWiki Rendering/Macro transformation
Translate-URL: https://l10n.xwiki.org/projects/xwiki-rendering/macro-transformation/fr/

* Change the annotated HTML5 renderer to only render figure captions when inside a figure.
* Extend BlockStateChainingListener with an event stack to allow getting
  the parent event.
* Extend BlockStateChainingListenerTest to test for parent events.

* Add unit tests to test previous event information
* Handle group and metadata events
* Only set the previous event information after handling an event

  * Handle wikiattachmentlink the same way we handle wikiinternallink
    class
  * Add integration tests to cover the bug

XRENDERING-632: Figure and figure caption events are not handled by the composite and queue listener