gregbell/active_admin — pull request #2070 by lupinglade (2013-04-07 21:59:04+00:00)
Title: Fixes error on Ruby 2.0.0/Rails 4.0.0.beta1

The argument in this override was missing and it now complains about it:

```
...lib/active_admin/reloader.rb:78:in `updated_at': wrong number of arguments (1 for 0) (ArgumentError)
```