[MERGE] Microformats (microdata) support for improved SEO.

[MERGE] Microformats (microdata) support for improved SEO.

Supported formats:
 - Organization
   https://support.google.com/webmasters/answer/146861?hl=en&ref_topic=1088474
   http://schema.org/Organization
 - Event
   https://support.google.com/webmasters/answer/164506?hl=en&ref_topic=1088474
   http://schema.org/Event
 - Product+Offer
   https://support.google.com/webmasters/answer/146750#offer_properties
   http://schema.org/Product
   http://schema.org/Offer

Tested with http://www.google.com/webmasters/tools/richsnippets

bzr revid: chm@openerp.com-20140207113721-klunj6bf9qp4b2cx