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 dimension element
	 */
	public OdaDimensionHandle newOdaDimension( String name )
	{
		
		OdaDimension element = new OdaDimension( name );
		module.makeUniqueName( element );
		OdaHierarchy hierarchy = new OdaHierarchy( );
		element.add( module, hierarchy, IDimensionModel.HIERARCHIES_PROP );
		module.makeUniqueName( hierarchy );
		return element.handle( module );
	}
	/**
	 * Creates a new hierarchy element. The name is required. If the
	 * <code>name</code> is null, we will make a unique name for it.
	 * 
	 * @param name
	 *            hierarchy name
	 * @return a handle to the hierarchy element
	 */
	public OdaHierarchyHandle newOdaHierarchy( String name )
	{
		OdaHierarchy element = new OdaHierarchy( name );
		module.makeUniqueName( element );
		return element.handle( module );
	}
	/**
	 * Creates a new level element. The name is required. If the
	 * <code>name</code> is null, we will make a unique name for it.
	 *