Twenty Fourteen: match `screen-reader-text` accessibility styles a bit better with core, to avoid a jump when you move through the links, and to avoid a horizontal scroll at certain viewport widths. Also fix JS focus by specifying the first match object. Closes #25592.

git-svn-id: https://develop.svn.wordpress.org/trunk@26843 602fd350-edb4-49c9-b593-d223f7449a82
3.8-RC2


git-svn-id: https://develop.svn.wordpress.org/trunk@26844 602fd350-edb4-49c9-b593-d223f7449a82