gregbell/active_admin — pull request #1702 by whatcould (2012-09-28 14:41:26+00:00)
Title: Fix styling of Formtastic date elements

Newer Formtastic apparently uses .date_select class on date field wrapper (instead of .date?) in 2.2.

From their changelog:

* renamed DateInput (:as => :date) to TimeSelectInput (:as => :date_select), aliased and deprecated DateInput

This apparently changed the wrapper class.