Bug 292901 Confusing "Target" group for children filters
Steps: 1) I added a compound filter "or" and set "Mode" to "Exclude" and "Target" to "Folders" 2) I tried to add "Regex Filter" as a child for the compound one, and I see that I can choose "Target" here too Maybe we should choose "Target" only for top-level filters as we do with "Mode"? Or "Mode" should be available to set only if not already chosen for the parent?
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
*/
	public ResourceFilterGroup() {
		ImageDescriptor descriptor = AbstractUIPlugin
				.imageDescriptorFromPlugin(IDEWorkbenchPlugin.IDE_WORKBENCH,
						"$nl$/icons/full/obj16/header_complete.gif"); 
		if (descriptor != null)
			checkIcon = descriptor.createImage();
	}
	/**
	 * Set the IContainer resource to edit
	 * 
	 * @param res
	 *            the container resource
	 */
	public void setContainer(IContainer res) {
		resource = res;
	}
	private IContainer getNonExistantResource() {
		String projectName = "nonExistantProject_"; 
		IProject p = ResourcesPlugin.getWorkspace().getRoot().getProject(
				projectName);
		int iteration = 0;
		while (p.exists()) {
			p = ResourcesPlugin.getWorkspace().getRoot().getProject(
					projectName + iteration);
			iteration++;
		}
		return p;
	}
	class Filters extends FilterCopy {