Twenty Fifteen: less than or equal to is incorrect here when the sidebar only appears at 955px -- it should be less than for removal of inline styles.

Props iamtakashi, fixes #30656


Built from https://develop.svn.wordpress.org/trunk@30804


git-svn-id: http://core.svn.wordpress.org/trunk@30794 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: correct escaping.

Props iamtakashi, fixes #30651.


Built from https://develop.svn.wordpress.org/trunk@30805


git-svn-id: http://core.svn.wordpress.org/trunk@30795 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: minor file cleanup.

Props iamtakashi, fixes #30653.


Built from https://develop.svn.wordpress.org/trunk@30806


git-svn-id: http://core.svn.wordpress.org/trunk@30796 1a063a9b-81f0-0310-95a4-ce76da25c4cd