Twenty Fourteen: minor color contrast and a11y fixes, see #25054.
Built from https://develop.svn.wordpress.org/trunk@25740


git-svn-id: http://core.svn.wordpress.org/trunk@25653 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Show a label for the "Home" page nav menu item checkbox. props SergeyBiryukov. props ericlewis for the initial patch. fixes #25410.

Built from https://develop.svn.wordpress.org/trunk@25741


git-svn-id: http://core.svn.wordpress.org/trunk@25654 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen:  a11y fix for keyboard navigation and Skip Content link, see #25054.
Built from https://develop.svn.wordpress.org/trunk@25742


git-svn-id: http://core.svn.wordpress.org/trunk@25655 1a063a9b-81f0-0310-95a4-ce76da25c4cd