Also fixes uploader UIs on iOS and Kindle Fire by improving wp.Uploader. Adds mobile viewport specifications. Moves scrollbar back to fixed positioning. git-svn-id: https://develop.svn.wordpress.org/trunk@21014 602fd350-edb4-49c9-b593-d223f7449a82
git-svn-id: https://develop.svn.wordpress.org/trunk@20988 602fd350-edb4-49c9-b593-d223f7449a82
git-svn-id: https://develop.svn.wordpress.org/trunk@20960 602fd350-edb4-49c9-b593-d223f7449a82