twbs/bootstrap — pull request #9353 by kevinSuttle (2013-08-12 02:28:11+00:00)
Title: Map "contentinfo" role to HTML5 footer element

http://blog.paciellogroup.com/2013/02/using-wai-aria-landmarks-2013/#tablex

http://www.w3.org/TR/wai-aria/roles#contentinfo