Bug 210496 Add hasStyle property in reportItemModel extension point
When chart gets reportItem's properties by extending ReportItem, style properties are null. Hence, model needs to add hasStyle property in reportItemModel extension point
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ElementDefn.java
* <p>
	 * Containers are handled differently. Since the style system emulates CSS,
	 * containers can set all style property values, and the values cascade to
	 * the contents of the element.
	 * 
	 * @throws MetaDataException
	 *             if exception occurs when add style properties.
	 */
	private void addStyleProperties( ) throws MetaDataException
	{
		if ( !hasStyle( ) )
			return;
		if ( isContainer( ) )
		{
			
			
			List styleProperties = MetaDataDictionary.getInstance( ).getStyle( )
					.getLocalProperties( );
			for ( int i = 0; i < styleProperties.size( ); i++ )
			{
				PropertyDefn prop = (PropertyDefn) styleProperties.get( i );
				properties.put( prop.getName( ), prop );
			}
		}
		else
		{
			if ( stylePropertyNames == null )
				return;
			ElementDefn style = (ElementDefn) MetaDataDictionary.getInstance( )
					.getStyle( );