sferik/rails_admin — pull request #1302 by bernardofire (2012-08-30 19:28:48+00:00)
Title: Add checkbox to select/unselect all fields when exporting (Issue #1241)

Add checkbox to select/unselect all fields when exporting (solve issue #1241).

I hope this is right.

I didn't make the test, if you it's a need for this feature, please let me know and I'll make it.