pronamic/wp-gravityforms-nl — pull request #2 by KoenRijpstra (2014-07-03 12:29:18+00:00)
Title: Added gform_datepicker_init

Gravity Forms changed the script name from 'gform_datepicker' to 'gform_datepicker_init'.
I am not 100% sure if they made the change in version 1.8.9.