Swing editor for HAPI URIs
Creates new form HapiDataSourceEditorPanel
return the duration in a easily-human-consumable form.
load the known servers and set the GUI. This should not be called from the event thread, and a runnable for the event thread will be submitted.
request that the known servers be displayed. This will spawn an asynchronous thread to get the server names, and then will load the GUI on the event thread. This can be called from the event thread.