Bug 120068 TOC Item Expression is added automatically when adding the group key
Description: TOC Item Expression is added automatically when adding the group key Steps to reproduce: 1.Add a table binding with the dataset 2.Choose the table, add a group(say goupkey:row["CUSTOMERNUMBER"]) 3.Click "group" to invoke "Edit Group" dialog Expected result: Nothing in TOC Item Expression Actual result: The group key (row["CUSTOMERNUMBER"]) is added to the TOC Item Expression
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
sortingGroup.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		sortingGroup.setLayout( new FillLayout( SWT.VERTICAL ) );
		Composite sortingGroupComposite = new Composite( sortingGroup, SWT.NONE );
		sortingGroupComposite.setLayout( new GridLayout( ) );
		ascending = new Button( sortingGroupComposite, SWT.RADIO );
		ascending.setText( sortByAscending.getDisplayName( ) );
		descending = new Button( sortingGroupComposite, SWT.RADIO );
		descending.setText( sortByDescending.getDisplayName( ) );
	}
	/**
	 * Creates sorting and filter table area
	 * 
	 * @param parent
	 *            the parent composite
	 */
	private void createFilterSortingArea( Composite parent )
	{
		Group group = new Group( parent, SWT.NONE );
		group.setText( GROUP_DLG_GROUP_FILTER_SORTING );
		group.setLayout( new GridLayout( ) );
		group.setLayoutData( new GridData( 550, 250 ) );
		ArrayList list = new ArrayList( 1 );
		list.add( inputGroup );
		TabFolder tab = new TabFolder( group, SWT.TOP );
		tab.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		TabItem filterItem = new TabItem( tab, SWT.NONE );
		filterPage = new FormPage( tab,
				FormPage.NORMAL_FUNCTION,
				new FilterHandleProvider( ) {
					public int[] getColumnWidths( )