- Move ActionBar into HeaderMenu
- Make Design of ChatControl look cleaner
- Hide the Roster in Groupchats per default
- Add Button to hide/show Roster in Groupchats
- Move Groupchat topic into popover
- Display Avatars on the right side of the ChatControl and status on the
left
- Add a default Avatar for contacts that have none
A jid can contain characters that are not allowed in an action name.
This creates a unique UUID4 for each MessageControl and uses it as
action name instead.
We can reuse the UUID for other actions that belong to the
MessageControl
Fixes#8636