Bug 136241 [regression]Preview template in web viewer and pdf didn't get correct effect.
Description: Preview template items in web viewer and pdf didn't get correct effect. Steps to reproduce: 1. Create template items. 2. Preview in Web Viewer and pdf. Expected result: Same effect as in html. Actual result: In web viewer, see only blank box. In pdf, blank page.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/ContentCommand.java
MoveContentRecord record = new MoveContentRecord( element, slotID,
				content, adjustedNewPosn );
		getActivityStack( ).execute( record );
	}
	/**
	 * Returns false if the content has ancestor behind the new position or has
	 * children before the new position.
	 * 
	 * @param content
	 *            the element to move position
	 * @param slotID
	 *            the slot that contains the element
	 * @param newPosn
	 *            the new position within the slot.