Bug 26233: (bug 25553 follow-up) Make date columns sortable on the edit items table

Bug 26233: (bug 25553 follow-up) Make date columns sortable on the edit items table

We were missing to pass the title-string to datatables.

Test plan:
Retest bug 26233, with appropriate dates

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit df5c9d0725dec84a3d57f97a7728cbc7e1cac9fc)

Signed-off-by: Aleisha Amohia <aleishaamohia@hotmail.com>
(cherry picked from commit 2a48a23c4209fea92fcdaae66268a1af9004a736)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>