Twenty Fifteen: admin-custom-header.css was emptied in r30567 so let's remove it entirely.

Props kwight, fixes #30648.


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Twenty Fifteen: we should be checking for twentyfifteen_get_color_scheme_choices here not twentyfifteen_get_color_scheme_control_options

Props iamtakashi, fixes #30652


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Twenty Fifteen: prevent jumping on hover in blog footer links with Safari

Props iamtakashi, fixes #30654.


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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


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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