WildFly / EAP domain mode management UI

Max brought the topic of Domain mode management UI.

The domain mode needs a special treatment.
Logically it's a matrix, and calls for a matrix-like UI instead of a tree.
The structure would be similar to the pictures of domain mode in tutorials (TBD: link).
An inspiration may be taken from AS web console.

As a preliminary solution, a tree may be used, in which case it may omit host controllers which do not play much role in domain mode management, from the admin PoV.
The nodes would represent server groups, and their leaves would represent particular servers (JVMs).