GitLab

* Escape tag names for XWiki syntax

- Remove all the notification filter preferences from the main wiki after a sub-wiki is deleted
- Update the cache accordingly
- Data migration implementation to cleanup notification filter preferences remaining from previously removed wikis

XWIKI-19719: Attachments added via copy & paste state that they've been by admin instead of the user editing the page (#1845)

- Replace project.properties by System.getProperties()/System.getProperty()
- Use findAll instead of find to loop over all the properties

* Fix NPE

Fix a flickering assert caused by solr returning results in undefined order.

This reverts commit 1e5a801d.

XWIKI-19707: Add JavaScript API for extending Live Data with menu item and panel

* Ensure that panels are registered even when loading the translations
fails.

XWIKI-19724: LiveData should trigger an event when an instance has been created

* Fix test which requires PR (to not get a SafeStatusJob)

* Register all panels in the logic
* Allow Vue components as panels
* Sort panels by order, allowing to inject panels at arbitrary positions

* Add the xwiki:livedata:instanceCreated event.

XWIKI-19634: Live Data triggers JavaScript events on a detached DOM element

* Do not replace the original container but instead update it
accordingly once Vue.js has been loaded.
* Remove the id from the root component as it is now on the wrapping
container.

* Rename bodyElement to container.
* Rename addExtensionPanel to registerExtensionPanel.

* Code style.
Co-authored-by: Manuel Leduc <manuel.leduc@xwiki.com>

- Add a placeholder on the search field
- Fix the loader display while the search queries are running
- Stabilize the docker test