Show port number of socket binding references in configuration forms

When there is a socket-binding attribute in some form, it would be useful to show the port number associated to that socket-binding.

This proposal is to show a dialog similar to the expression resolver, to show the socket-binding port number. For this to work:

• Show an icon in the same form item when the attribute name is socket binding (similar to the expression resolver icon)
• When clicked, open a dialog and show the port number of the socket binding (in standalone mode, displays the runtime attribute bound-port)
• In domain mode, the dialog displays the port number of all socket-binding groups (as the profile is not tied to a specific socket-binding-group)
• If the port is an expression, resolve it before display