Handle failed password attempts when logging into new UI
I realise that the new UI in FreeNAS-11.1-BETA1 is not feature complete, so I'm not sure I'm supposed to log issues for this, but I'm going to anyway.
In the new UI, when a user enters the wrong password, the system doesn't issue any message. It just disables the "Sign In" button and sits there.
Also, since the password field doesn't get cleared (as the old/current UI does), the user needs to clear the whole field manually before the "Sign In" button becomes active again. This is very annoying when e.g. some characters are missing because the NUMLOCK key wasn't engaged.