alphagov/spotlight — pull request #768 by lennym (2014-08-27 09:23:01+00:00)
Title: Fix table sorting for date range columns

Because column key is an array, adding the key as a data attr added a comma separated list, which then can't be used to lookup. Just use the start point of the range for sorting in this case.

Fixes https://www.pivotaltracker.com/story/show/77623752