request #6733: Fix datetimepicker on artifact creation

Change-Id: I78231093c6ac883cf7c69571fcf3f18815a68cd0
Merge commit 'refs/changes/22/2322/1' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6733: Fix datetimepicker on artifact creation
This is Tuleap 6.12.99.67

Change-Id: I7194d60c3ddd8a2c520c8306ca3f9728bb66815b