tasks #7406: ensure REST is compatible with date-time fields

Change-Id: Ia63b5a6868096f4cb35cdfc99ba2f692307b732a
Merge commit 'refs/changes/92/2992/11' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7406: ensure REST is compatible with date-time fields

Change-Id: I668c9d0d35409659297e7190cd0382e5756e0291
This is Tuleap 7.4.99.34

Change-Id: I7eec9294eccecc7f6105bbff7fa96daaeb131929