WATCHLIST from NotificationPreferenceCategory

* Improve the fix done for XWIKI-11090.

application
* Moved NotificationPreferenceScopeClass to mandatory document
initializer
* Allow support to watchlist notifications

application
* Update QueryGenerator to use NFExpressionToHQLParser

application
* Introduce NFExpressionToHQLParser
* Add unit tests

application
* Refactor the NotificationFilter API to user the notfication filter
abstract syntax tree
* Update unit tests

application
* Add notification filter abstract syntax tree nodes
* Add NotificationFilterProperty

application
* Refactor
DefaultNotificationPreferenceManager#saveNotificationsPreferences
* Add unit tests in xwiki-platform-notifications-filters

application
* Add NotificationPreferenceCategory enum
* Move NotificationProperty to
xwiki-platform-notifications-preferences-api as
NotificationPreferenceProperty
* Move NotificationPreferenceClass to document initializer

application
* Remove TargetableNotificationEventTypePreference
* Update xwiki-platform-notifications-sources to allow application based
notifications

application
* Fix functionnal tests

application
* Refactor QueryGenerator with the new NotificationPreference API

This reverts commit caa2324b.

- Fixed tests by reusing the existing 'wiki-code' class and updating the test selectors
- Removed the '.wiki-code' css from misc.less since it's no longer needed and related css goes into code.css now.

XWIKI-14578: Refactor the code viewer and integrate blame information
- Replaced the textarea with a line-based view
-- Added support for to linking and highlighting a line number
- Added blame information for each line
-- Displaying blocks of lines coming from the same change
- Clicking the version shows the changes view, comparing it to the previous version
- Bundled the Blame API as core extension

XWIKI-14590: Make Gallery Macro responsive

Added max-width to prevent gallery to get out of container.

* Update test page object
* Remove test for the old editor

* Fix the category of the WYSIWYG Editor administration section. Use an older creation date than the CKEditor.AdminSection in order to have priority when determining the category.

application
* Update NotificationFilter API

application
* Add @Unstable annotations
* Add NotificationPreferenceProvider API
* Add TargetableNotificationPreferenceBuilder API
* Add DefaultTargetableNotificationPreferenceBuilder Component
* Add TargetableNotificationEventTypePreference Component
* Add UserProfileNotificationPreferenceProvider Component
* Add unit tests

* Remove left-over code from XWIKI-14504 that causes a JavaScript exception and breaks the feature on IE11.

XWIKI-14579: The picker to filter on Date types, in LiveTables, doesn't appear on IE 11 and Microsoft Edge 40
* Workaround a moment-jdateformatparser issue.

* Fix unregistered components
* Fix undefined roles

* Fix unit tests syntax

* Add xwiki-platform-notifications-notifiers module
* Update POM files

* Create module xwiki-platform-notifications-sources

* Create module xwiki-platform-notifications-script