Fix sla #4779 - Manage date helper in future

The date helper ("X minutes ago") now handle dates in future ("In X minutes)"

Change-Id: I6f9f5172ba232d4a481e5c1a73a94a3254946720
Fix request #4958: card fields not updated anymore after overlay.

Change-Id: I8c57c2e8ceceae2586dad579382ebadc3b882113
Merge commit 'refs/changes/41/941/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix sla #4779 - Manage date helper in future

Change-Id: I639c0a4bc53cd97155864339bdb134d600f61907
Tuleap 6.4.99.17

Change-Id: I1313b23eec53c35e9a5ad511c1196065f6fd2bda
Merge commit 'refs/changes/42/942/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix request #4958: card fields not updated anymore after overlay.

Change-Id: Iddd6aa2617a39a0b1cc6143ce48761b5d0f6f6c3
Tuleap 6.4.99.18

Change-Id: I2636800c2e7903ad42d2fc89d2bbd3fa3c6a4b5f