Pagination must issue a 404 when out of range

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Go to a multi-page page.
2. Enter an out of range value (< 1, > n, where n is the last page)
3. The page will be blank but it should be an error instead

What is the expected output? What do you see instead?

The page should push a HTTP 404 error. This may require the use of custom error 
pages. 

Please use labels and text to provide additional information.

Original issue reported on code.google.com by [email protected] on 12 Mar 2013 at 7:02