Pagination with rel="next" and re="prev" on Catalog

Pagination with rel="next" and re="prev" on Catalog - Resubmit 841f4f4
http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html

---
Products viewed report have less number of product visible.
https://opencart.atlassian.net/browse/OC-1747

and

wrong pages number in pagination on category list c450836