Set minimum z-index for the TinyMCE modals and adjust the z-index in DFW, see #26952
Built from https://develop.svn.wordpress.org/trunk@27460


git-svn-id: http://core.svn.wordpress.org/trunk@27305 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adjust .find-box-inside responsive style, props avryl, see #26952
Built from https://develop.svn.wordpress.org/trunk@27461


git-svn-id: http://core.svn.wordpress.org/trunk@27306 1a063a9b-81f0-0310-95a4-ce76da25c4cd