I find that selecting  'Standard copyright' option when creating a narrated website that no such notice appears.
I think it should appear in the footer under the 'Generated by...'  line.

This is the code produced (note blank space).
<div id="footer">
		<p id="createdate">
		Generated by <a href = "http://gramps-project.org/">Gramps</a> 3.4.2-1 on 2012-11-05
		<p id="copyright">

Am I missing something? Any help would be appreciated.  Thanks.