Auto updates: For follow-up API call when an update fails, send back the version attempted. see #22704.

Built from https://develop.svn.wordpress.org/trunk@25755


git-svn-id: http://core.svn.wordpress.org/trunk@25668 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: a11y and RTL fixes for tabbed navigation and Skip to Content link. Props obenland, see #25054.
Built from https://develop.svn.wordpress.org/trunk@25756


git-svn-id: http://core.svn.wordpress.org/trunk@25669 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: improved JS support for keyboard navigation for main navigation menu. Props obenland, see #25054.
Built from https://develop.svn.wordpress.org/trunk@25757


git-svn-id: http://core.svn.wordpress.org/trunk@25670 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: improve display for elements in the featured content area by preventing titles from breaking and letting content overflow with an ellipsis. Props obenland, fixes #25053.
Built from https://develop.svn.wordpress.org/trunk@25758


git-svn-id: http://core.svn.wordpress.org/trunk@25671 1a063a9b-81f0-0310-95a4-ce76da25c4cd