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/ContentCommand.java
if ( containerDefn == null )
			throw ContentExceptionFactory.createContentException( focus,
					ContentException.DESIGN_EXCEPTION_SLOT_NOT_FOUND );
		if ( !containerDefn.canContain( newElement ) )
			throw ContentExceptionFactory.createContentException( focus,
					newElement, ContentException.DESIGN_EXCEPTION_WRONG_TYPE );
		
		if ( element.isContentOf( newElement ) )
			throw ContentExceptionFactory.createContentException( focus,
					newElement, ContentException.DESIGN_EXCEPTION_RECURSIVE );
		if ( focus.getSlotID( ) == IModuleModel.COMPONENT_SLOT )
		{
			if ( StringUtil.isBlank( newElement.getName( ) ) )
				throw ContentExceptionFactory
						.createContentException(
								focus,
								newElement,
								ContentException.DESIGN_EXCEPTION_CONTENT_NAME_REQUIRED );
		}
		
		if ( !focus.contains( module, oldElement ) )
			throw ContentExceptionFactory.createContentException( focus,
					oldElement,
					ContentException.DESIGN_EXCEPTION_CONTENT_NOT_FOUND );
		
		if ( oldElement instanceof TemplateElement )
		{
			if ( !oldElement.canDrop( module )
					|| !oldElement.isTemplateParameterValue( module )
					|| !newElement.getDefn( ).isKindOf(