refs ticket #499 and #500: structured html has a <section> node and not a <div class='section'> node.
refs #499: turn sections into headers placing section attributes onto header.
refs ticket #499: first cut at complex sections
refs #499: convert the new section mapping from aloha back to structured html5
Merge pull request #9 from Connexions/ticket499

Ticket 499 - Mapped sections according to our spec document