add rel-link="bookmark" to all main nav links via _includes/navigation_partial.html
remove rel=bookmark from main nav links as it is wrong
add rel=bookmark to all snippet header links...except the search results page
add 'role="article"' to all <article> tags sitewide

a good thing to implement as per the W3C spec (http://www.w3.org/TR/2013/WD-aria-in-html-20130214/#recommendations-table).
make grunt watch:postPageOnlyTask watch for changes in js/ root
add role=search attribute to searchbox via js/buildform.js...update comments