Twenty Fourteen: move all controls for managing Featured Content to the Customizer. Also implement smart fallbacks to not using a custom tag with the "featured" tag and sticky posts. Props obenland and celloexpressions, see #25549.
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git-svn-id: http://core.svn.wordpress.org/trunk@25966 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: add contextual help text to Background and Colors controls in Customizer, using the `description` field. Props rachelbaker, see #25869.
Built from https://develop.svn.wordpress.org/trunk@26038


git-svn-id: http://core.svn.wordpress.org/trunk@25967 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: better override for Background and Colors descriptions in Customizer, props obenland. See #25869.
Built from https://develop.svn.wordpress.org/trunk@26039


git-svn-id: http://core.svn.wordpress.org/trunk@25968 1a063a9b-81f0-0310-95a4-ce76da25c4cd