Consider adding logging on client side, esp toolsui

[DennisHeimbigner]

Followup to issue #464.
When e.g. toolsui jar is run by clicking it, any stderr output is lost. This may also apply to jnlp invocation.
It would be desirable to provide some mechanism to capture stderr on the client side so that it does not get lost. Alternately, we could support client-side logging. This is not essential, because we can ask
users to execute toolsui.jar in a command line window, which will show the output. Stll, it might be nice.

[JohnLCaron]

We have logging inside of toolsui, though im not positive what its configured for when clicking on jar. Should be easy to do something reasonable.

JNLP launching can be fixed by enabling the console window. Each OS is different, in Windows its in the Java control panel.