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
* Tests the setting and getting choice extension property.
	 * 
	 * @throws Exception
	 *             if any exception.
	 */
	public void testChoiceProperty( ) throws Exception
	{
		ExtendedItemHandle itemHandle = insertExtendedItem(
				"matrix1", TESTING_MATRIX_NAME ); 
		
		itemHandle.setProperty( "test5", "choice2" );
		assertEquals( "choice2", itemHandle.getProperty( "test5" ) );
		try
		{
			itemHandle.setProperty( "test5", "wrongChoice" );
			fail( );
		}
		catch ( SemanticException e )
		{
			assertTrue( e instanceof PropertyValueException );
			assertEquals( "choice2", itemHandle.getProperty( "test5" ) );
		}
	}
	/**
	 * Tests the setting and getting choice property defined in dynamic
	 * property.
	 * 
	 * @throws Exception
	 *             if any exception.
	 */