Define a default Login-Domain (ie an Ldap domain) to be automatically selected in the frontend login window

When an administrator defines an LDAP "domain", his users are likely to authenticate against it and not against the default "Internal DB" that is automatically selected in the login window.
This is not an issue for users already defined as LDAP users in the internal DB because OM is able to read the LDAP domain from teh DB in order to perfform authentication.
However this is an issue for the first login because most users would forget to set the Domain and thus would fail to login for the first time (resulting in multiple calls to the It service... and I would definitely like to avoid this situation .

I'm preparing a patch for this.