Bug 189751 cube enhancement: Groups and Summaries category; an empty summary field is being created.
Based on bug Id# 187412: Cube builder enhancement While reviewing the cube builder enhancements, I found some things that are not updated as the mock up. Please see the attached document. Under Groups and summaries category: 1. If new a cube, under 'groups and Summaries' category, by default an empty summary field is being created. No empty groups and summaries should be there to start with. Make it consistent as 'Groups (dimension): no empty group is there. 2. The category title should repeats itself as Groups and Summaries 3. Primary Dataset has to be listed as (Primary)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ElementFactory.java
* @return a handle to the cell
	 */
	public CellHandle newCell( )
	{
		Cell element = new Cell( );
		module.makeUniqueName( element );
		return element.handle( module );
	}
	/**
	 * Creates a new grid item.
	 * 
	 * @param name
	 *            the optional grid item name. Can be <code>null</code>.
	 * @return a handle to the grid item
	 */
	public GridHandle newGridItem( String name )
	{
		GridItem element = new GridItem( name );
		module.makeUniqueName( element );
		return element.handle( module );
	}
	/**
	 * Creates a new grid item with pre-defined columns and rows.
	 * 
	 * @param name
	 *            the optional grid item name.
	 * @param columnNum
	 *            column number of the grid. If it is less than 0, none column
	 *            will be added.
	 * @param rowNum