b18a351 WebUI: Add handling for HTTP error 404

1 file Authored by pvomacka 7 years ago, Committed by mbasti 7 years ago,
    WebUI: Add handling for HTTP error 404
    
    In case that API is not accessible the 404 error is thrown. There was error dialog
    with almost no information. The new dialog says what error is there and what can be
    the main cause of the error.
    
    https://fedorahosted.org/freeipa/ticket/4821
    
    Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>