Automattic/_s — pull request #530 by slobodan (2014-06-27 03:25:41+00:00)
Title: Adds 'no-sidebar' class when no sidebar widgets are used, to match merge from #529

Based on discussion with @philiparthurmoore in #529. Decided to name the class 'no-sidebar' instead of 'full-width-site' because _s based themes don't necessarily have to have two-column layouts, even with sidebar populated.