Twenty Fourteen: RTL for the slider.

props yoavf.
see #25801.

Built from https://develop.svn.wordpress.org/trunk@26606


git-svn-id: http://core.svn.wordpress.org/trunk@26496 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: Flip genericons in RTL.

props yoavf.
see #25801.

Built from https://develop.svn.wordpress.org/trunk@26607


git-svn-id: http://core.svn.wordpress.org/trunk@26497 1a063a9b-81f0-0310-95a4-ce76da25c4cd