tasks #6610: Date criteria

Change-Id: I5ea3e4cde6546e33d623dae6f63edfda732704ca
Merge commit 'refs/changes/69/2269/2' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #6610: Date criteria

Change-Id: I611df940564056316a50ee1f100f5374593785a8
Tuleap 6.12.99.25

Change-Id: Id586f5cda08904b03f04ecad0fa060c32f01d7a1