* Refactor RssMacro to use AbstractBoxMacro instead of BoxMacro

* Add REVAPI rules to justify some API changes.
* Lower the jacoco threshold because the REST model has changed.
* Add the localeAware optional parameter to search pages/spaces REST API
  entry points to only fetch the best translated pages based on the user
  locale.

* Update the revapi ignore rule.

* XWIKI-15605: Auto-suggest control doesn't display correctly hidden pages

* Add an optional parameter to the ClassPropertyValuesResource API to
  get the exact match value.
* Add a getValue method to the ClassPropertyValuesProvider to get the
  exact match value.
* Use the exact match parameter when fetching selected items in the
  property suggest picker.
* Use the exact match query for selected values in users or groups
  suggest picker.

* Fix because Restlet does not handle @FormParam.

This reverts commit 16ca3015.

* Fix broken revapi ignores.

* Create a new table.
* Refactor NotificationFilterPreference so it could be easily stored in the database and can scale as well.
* Fix the UI.
* Add a cache for the new store.
* Adding a migrator.
* Enable the new mapping.
* Add test.
* Add functional tests.
* Make the results of the notification filter preferences livetable results predictable so tests are solid.
* Make saving messages in the UI more consistent.
* Adding a warning in the configuration file of activity stream.
* Remove the previous XClass.
* Remove the previous XClass's page during the migration as well.

XWIKI-15436: Stack Overflow when there is many notification filters.

* Improve the query.
* Add tests.
* Put inclusive filters BEFORE exclusive filters so that inclusive filters do not invalidate exclusive ones.
* Introduce the ConcatNode

XWIKI-15397: Notifications are not (always) automatically loaded in the list on Internet Explorer 11.

XWIKI-15034: Live email notification not showing up correctly when restricting permissions to unregistered users.

* Clean my work

[Misc] Added back exclude removed by error by Thomas see https://github.com/xwiki/xwiki-platform/commit/a70c4652bfc76858b4289b5b2d43cfe579a49468#diff-f7d9f26837a9903e7c4befe7db15b03fL267)

XWIKI-14864: $datetool.whenIs() does not take into account the localization set in the wiki.

XWIKI-15244: Events existed before turning on notifications are displayed if following an user.

* Introduce a "starting date" for each notification filter preference.
* Update EventUserFilter to handle this starting date for followed users.

* Fix regression caused by the refactoring.

* Add the displayWatchedUsersOnly parameter.

* Add revapi ignore.