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.tests/test/org/eclipse/birt/report/model/extension/ReportItemExtensionTest.java
assertEquals( ColorPropertyType.BLUE, extendedHandle
				.getProperty( Style.COLOR_PROP ) );
		
		designHandle.getStyles( ).drop( 3 );
		assertEquals( ColorPropertyType.RED, extendedHandle
				.getProperty( Style.COLOR_PROP ) );
		save( );
		assertTrue( compareFile( goldenFileName_3 ) );
		save( );
		assertTrue( compareFile( goldenFileName_3 ) );
	}
	/**
	 * @throws DesignFileException
	 */
	public void testStylePropertiesFromGroupElementHandle( )
			throws DesignFileException
	{
		openDesign( fileName_3 );
		ExtendedItemHandle extendedHandle = (ExtendedItemHandle) designHandle
				.findElement( "right extended item" ); 
		assertNotNull( extendedHandle );
		ArrayList list = new ArrayList( );
		list.add( extendedHandle );
		GroupElementHandle groupHandle = new SimpleGroupElementHandle(
				designHandle, list );
		
		
		assertEquals(
				"white", groupHandle.getStringProperty( Style.BACKGROUND_COLOR_PROP ) );