* Add classes like `.site` and `.site-content` in addition to the set of IDs already present, making things much better for child themes to have more than one generic element like `nav` inside the content container.
* Bump JS version after selector change.
* Move `image-attachment` to `post_class()` output
More exhaustive notes in the ticket on each id and class change.
git-svn-id: http://core.svn.wordpress.org/trunk@21404 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Triggered when a viewport is under 600 pixels wide. This functionality depends on JS being enabled, and will naturally fall back to a normal, expanded menu for a client without JS.
Props iandstewart for the original JS file and concept.
git-svn-id: http://svn.automattic.com/wordpress/trunk@20007 1a063a9b-81f0-0310-95a4-ce76da25c4cd
