Themes: Remove a mp6 reference which is no longer needed. See #25948

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git-svn-id: http://core.svn.wordpress.org/trunk@26358 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Themes: Display Activated/Deleted messages below the H2, before the Themes. See #26305

Built from https://develop.svn.wordpress.org/trunk@26461


git-svn-id: http://core.svn.wordpress.org/trunk@26359 1a063a9b-81f0-0310-95a4-ce76da25c4cd