* Use camelcase name for the new script service
  * Fix the disabling of the temporary attachment upload in realtime
    editor
  * Remove the unnecessary parameter in InplaceEditing

  * Provide a new role component for managing temporary attachments
  * Provide implementation based on a map of of map of attachments for
    handling different editions of documents for each user sessions
  * Use and clean the temporary attachments in various actions
  * Improve EditForm to read a list of temporary uploaded attachments,
    to only add those when using save action
  * Small refactoring of DownloadActionTest to remove the old
    MockitoDownloadActionTest
  * Provide new API in WysiwygEditorScriptService to provide an endpoint
    for uploading temporary attachments
  * Small changes in InplaceEditing to send the list of uploaded
    attachments (the inputs read there should be created by the WYSIWYG
editor implementation)
  * Handle the upload max size
  * Add some missing documentation
  * Add a new method to explicitely dispose the temporary content of an
    attachment
  * Ensure to use the document reference space to get the max upload
    value
  * Switch off the feature using the CKEditor switch in the realtime
    editor for now
  * Add a new script service method to check if a feature is supported
    in WYSIWYGEditorScriptService
  * Add missing parameter in InplaceEditing to support temporary upload
  * Improve DownloadAction to be more explicit about what happens in
    case of downloading a file when a temporary uploaded attachment is
available, and don't rely anymore on a query parameter since it's not
reliable

XWIKI-19607: The Real-time WYSIWYG editor doesn't work when an iframe is injected before the WYSIWYG editor iframe

* Replace more deprecated APIs

* Fix usage of deprecated APIs (in order to avoid the jquery-migrate warning logs in the JavaScript console).

* Pass valid HTML to jQuery to avoid surprises (now and later).

* Fix invalid self-closing HTML tags, see https://jquery.com/upgrade-guide/3.5/. Note that apart from xwiki.selectize.js, this leaves single tags as-is as they should be okay.

* Also update code to use the standard Promise API.

* From real-time editors.

XWIKI-19158: The list of connected users and the lag are not visible on the real-time WYSIWYG editor toolbar
* Bulletproofing

XWIKI-19158: The list of connected users and the lag are not visible on the real-time WYSIWYG editor toolbar

* Update the ConfigurableClass object in XWiki.Realtime.Configuration (remove deprecated property and set scope to wiki)
* Upgrade to ChainPad Netflux and Netflux Client 1.0.0
* Add dependency to es6-promise that was removed from Netflux Client
* Add a timestamp query string parameter when retrieving the channel keys with REST to prevent caching issues in IE11.
* Setup polyfills for Promise, Object.entries() and XPath API in order to support IE11
* Define the missing toolbar variable which was causing both the Wiki and WYSIWYG realtime editors to fail in IE11.
* Improve the name of the realtime WYSIWYG editor displayed in the drop down on the administration section.
* Upgrade diffDOM to the latest version
* Add dependency on wicked-good-xpath in order to polyfill XPath API support in IE11

This reverts commit f487db81.

* Small fix for the editor wait functiion
* Use the bower WebJar instead of the NPM one becuse the later doesn't include the browser version of the JavaScript code..

* Make sure we do proper merge on save.