Minor improvements.

Base implementation. Mechanism allowing to take into account document#hidden in the query component.

Safer installed extension namespaces

Remove useless encapsulation

Applied patch from Ecaterina Moraru without any modification

XWIKI-7691: A user without edit right on the page should not see the button to update the extension in XR

XWIKI-7690: Add section ID in the user profile customization and leave Section Name as static or translatable string.

Added unit test.

XWIKI-7689: Possible java.lang.NullPointerException when importing an Extension in XR which does not have any stable version

XWIKI-7677: Add AnnotationConfiguration component to allow consistent retrieval of the Annotation Application's settings
* Boolean XClass fields are implemented using integer 0/1 values.

Fix potential classcast exception

- Removed annotation specific code from the XWiki class
-- Added an event listener for ApplicationReadyEvent and DocumentUpdatedEvent (that listens for updates of the configuration document) to reinitialize the configured class, ensuring that the required properties exist.

XWIKI-7677: Add AnnotationConfiguration component to allow consistent retrieval of the Annotation Application's settings

XWIKI-7676: The Annotations REST resources do not set the context to the wiki and page where the REST call was made

* Remove unused profile

XWIKI-7647: User new Job question/answer system to ask user to resolve merge conflicts in installed XARs
Properly reset context error