gregbell/active_admin — pull request #3324 by dimonzozo (2014-08-11 10:19:14+00:00)
Title: Fix in CSV streaming to call passed block

New streaming module overrides resource controller's index method and passes block to it.

This change broke custom format responses customization.

Example:

```ruby
module ActiveAdmin
class ResourceController
def index
super do |format|
format.file do
# this code won't be called
end
end
end
end
```