Bug 188829 Move the item ,the trans of the model don't close.
1:New report design. 2:Add a Embedded image. 3:Add another imge , then drag the second imge to the first position. 4:Change the size of the first image. Expected: Image change the size. Now: Image size don't change.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentElementCommand.java
int index = -1;
		if ( content != null && inherited instanceof List )
			index = ( (List) inherited ).indexOf( content );
		Object newValue = ModelUtil.copyValue( prop, inherited );
		ActivityStack activityStack = module.getActivityStack( );
		ContainerContext context = new ContainerContext( topElement, prop
				.getName( ) );
		if ( newValue instanceof List )
		{
			List list = new ArrayList( );
			PropertyRecord propRecord = new PropertyRecord( topElement, prop,
					list );
			activityStack.execute( propRecord );
			list = (List) newValue;
			for ( int i = 0; i < list.size( ); i++ )
			{
				DesignElement tmpContent = (DesignElement) list.get( i );
				ContentRecord addRecord = new ContentRecord( module, context,
						tmpContent, i );
				activityStack.execute( addRecord );
			}
		}
		else
		{
			PropertyRecord propRecord = new PropertyRecord( topElement, prop,
					newValue );
			activityStack.execute( propRecord );
		}
		if ( index != -1 )
			return (DesignElement) ( (List) newValue ).get( index );