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
.findElement( "right extended item" ); 
		assertNotNull( extendedHandle );
		extendedHandle.loadExtendedElement( );
		ExtendedItemHandle clonedHandle = (ExtendedItemHandle) extendedHandle
				.copy( ).getHandle( design );
		assertNotNull( clonedHandle );
		
		assertNotNull( ( (ExtendedItem) clonedHandle.getElement( ) )
				.getExtendedElement( ) );
		assertEquals( TESTING_MATRIX_NAME, clonedHandle.getExtensionName( ) );
		assertEquals( 1.2, clonedHandle.getX( ).getMeasure( ), 0.00 );
		assertEquals( "2in", clonedHandle.getProperty( "test1" ) ); 
		assertEquals( 22, clonedHandle.getIntProperty( "test2" ) ); 
		assertEquals(
				"type=bar,xScale=2,yScale=3,lineStyle=normal,script=internalScript", clonedHandle.getProperty( "test3" ) ); 
		assertNull( clonedHandle.getProperty( "test4" ) ); 
		assertEquals( "choice1", clonedHandle.getProperty( "test5" ) ); 
		assertEquals( "bar", clonedHandle.getProperty( "type" ) ); 
		assertEquals( null, clonedHandle.getProperty( "radius" ) ); 
		assertEquals( null, clonedHandle.getProperty( "pieWidth" ) ); 
		assertEquals( null, clonedHandle.getProperty( "pieHeight" ) ); 
		assertEquals( 2, clonedHandle.getIntProperty( "xScale" ) );  
		assertEquals( 3, clonedHandle.getIntProperty( "yScale" ) ); 
		assertEquals( null, clonedHandle.getProperty( "company" ) );  
		assertEquals( "normal", clonedHandle.getProperty( "lineStyle" ) ); 
	}
	/**
	 * Tests the notification mechanism: if the dynamic property list is changed
	 * after setting one extension property value, or not. There are different
	 * events.