Datasource Test Script UI Enhancement

Please make it so that the script editor remains accessible even after invoking the Test Script option.  It's really irritating to have to keep going back to the script textbox control, then re-selecting a test target.  Once a test device is selected it should be possible to run the script, and also be possible to make changes to the script and immediately re-run the script without having to select the test device each time.

This would be a productivity enhancement for those of us that do a lot of scripting.