* Implement hashCode and equals for Channel to be able to use it properly in hash-based collections.
* Fix inconsistent behavior between leaving a channel and being disconnected from a channel: in both cases the channel should be closed when there are no members left.
* Improve the way channel and user ids are generated: use StringBuilder and ThreadLocalRandom.

…ased.

Reverting because it's apparently creating problems with
closure-compiler and in particular with the
com.google.javascript.jscomp.CompilerOptions import in
xwiki-platform-skin-skinx

This reverts commit 8c94ef1.

This reverts commit cd2f3d1.

* XCOMMONS-2276 Upgrade to HtmlCleaner 2.25
* XCOMMONS-2265 HTML Encoded Line Feed character transformed in whitespace

- update to the release done today
- the "setRecognizeUnicodeChars" does no longer needed
  to be set to "false", but kept at the default value of "true"
  after https://sourceforge.net/p/htmlcleaner/bugs/221/ is fixed
- also update the tests to reflect the current behavior;
  most of them are likely improvenents, but also
  add a few cases where this is not so clear
- especially the test keeping entitiy encoded curly braces
  had to be disabled, as this no longer works that way
- remove the "clean double ampersand escape" workaround
  which is no longer necessary with HTMLCleaner 2.25
  and even harmful in the use case where users want to
  have their amperand encoded, e.g. when displaying
  the encoded form in wiki pages
- put back the ecplicit call to "setRecognizeUnicodeChars(true)"
  and add a comment why
- add more comments to tests to explain what they
  actually test and why
- changed one test to use different test text
  to attribute values and text nodes
- also fixed typos in test comments
- removed one test that only documents the behavior
  of the html cleaner
  * Upgrade to HtmlCleaner 2.29 and update tests
  * Clarify the test using @mflorea's comment information
  * Change remaining tests
  * Remove unnecessary comment
  * Remove now unnecessary filter
  * Remove now unnecessary workarounds and fix template test
  * Revert experiment in test
  * Update comments and minor style refactoring

---------

Co-authored-by: Clemens Robbenhaar <c.robbenhaar@green-meadows.de>
Co-authored-by: Michael Hamann <michael.hamann@xwiki.com>

* remove unused import

…nject.Provider and the opposite

…nject.Provider and the opposite

* also support getComponentDescriptor and injection

…nject.Provider and the opposite

* actually it feels too much in the case of getComponentDescriptor, it return null in the case of other virtual components

…nject.Provider and the opposite

* move to internal classes which had nothing to do in a public package

…nject.Provider and the opposite

* fix javadoc

…nject.Provider and the opposite

* add revapi ignores

* update test

…nject.Provider and the opposite

* update the test framework

…nject.Provider and the opposite

* update the test framework

* fix the test

* fix flickering test

XCOMMONS-2962: Provide a javax/jakarta bridge for Servlet APIs

…nject.Provider and the opposite

* better temporary since