#776 Show dialog property processed incorrectly on file launching

[Borislav Andruschuk]

see org.python.pydev.debug.ui.launching.AbstractLaunchShortcut.launch(IResource[], String, String) : 417 - 431

if fShowDialog is true group id should be processed in the following way:
String groupID = "org.eclipse.debug.ui.launchGroup." + mode;

where mode is 'run' or 'debug'. Otherwise in your case dialog will not appear because there aren't any corresponding launch group extensions for your keys in DebugUITools.openLaunchConfigurationDialog.