Review usage of HTML5 microdata in Largo and adjust as appropriate

[benlk]

• [ ] read https://html.spec.whatwg.org/multipage/#toc-microdata
• [ ] read http://microformats.org/wiki/hcard
• [ ] review Largo
• [ ] generate tickets for changes

[benlk]

Review Largo's use of HTML5 microformats to see if updates are needed