in-band was partially in core for historical reason, it has been moved to XEP-0077, and fixed. It is still incomplete, but should work for basic accounts creation.
- fix bug 3
- modify "Connection" params:
- rename "Server" to "Force server" and "Port" to "Force port"
- set the default value to empty string for both
- the bridge method has been removed, now a plugin takes care of it with XMLUI callback system
- TODO: xmpp.RegisteringAuthenticator still needs to be fixed