gregbell/active_admin — pull request #1082 by tanraya (2012-02-28 10:48:04+00:00)
Title: Fixed double rendering of Content-type meta-tag

ActiveAdmin renders `Content-type` meta tag twice, you can see it here: http://demo.activeadmin.info/

So I fixed it, I just removed insertion of additional meta tag from `ActiveAdmin::Views::Pages::Base#build_active_admin_head`
All tests passed.