Bug 154832 Wrong node is added to Report Parameters for cascading parameter in Palette view
Description: Wrong node is added to Report Parameters for cascading parameter in Palette view. Steps to reproduce: 1. New a report, add a cascading parameter 2. Switch to Script tab in Editor view, and then switch to Palette view 3. Expand Report Parameters node Expected result: A cascading parameter group is added to Report Parameters node Actual result: Expect a cascading parameter group is added to Report Parameters node, the children of the cascading parameter group are added as scalar parameters
UI/org.eclipse.birt.report.designer.ui.editors.schematic/src/org/eclipse/birt/report/designer/internal/ui/editors/script/JSEditor.java
( (IFormPage) editingDomainEditor ).getEditor( )
				.editorDirtyStateChanged( );
		firePropertyChange( PROP_DIRTY );
	}
	protected boolean checkEditorActive( )
	{
		return true;
	}
	/**
	 * Enables the editor UI components
	 */
	private void enableEditor( )
	{
		if ( editorUIEnabled == false )
		{
			getSourceViewer( ).getTextWidget( ).setEnabled( true );
			cmbExpList.setEnabled( true );
			butReset.setEnabled( true );
			editorUIEnabled = true;
		}
		settingText = true;
		setEditorText( "" ); 
		settingText = false;
	}
	/**
	 * Disables the editor UI components
	 */
	private void disableEditor( )
	{
		if ( editorUIEnabled == true )