Bugfix SUP-3171
list-plugin: When transforming a list to different list type, the available classes of the old list type where not removed. This has been fixed.
Bugfix SUP-3199
Setting a language annotation would remove the focus from the editable and therefore deactivate it. This has been fixed.
Bugfix SUP-3291
Added a section explaining Arenas to the UI documentation.
Bugfix SUP-3171
Sometimes setting a CSS class for a list with the list plugin, a previously selected class would not be removed first. This has been fixed.