twbs/bootstrap — pull request #14085 by cvrebert (2014-07-08 19:01:18+00:00)
Title: add role="presentation" to tab <li>s to improve accessibility

Refs #13554.
Per https://github.com/paypal/bootstrap-accessibility-plugin/blob/master/README.md#tab-panel
Credit: https://github.com/paypal/bootstrap-accessibility-plugin