Notification is sent only if necessary.
It means that if no comment, the user must have read access on at least one updated field.

Change-Id: Ib7278a6b0334a93e153487761e6450f8fd848582
Merge commit 'refs/changes/56/1556/1' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  Notification is sent only if necessary. It means that if no comment, the user must have read access on at least one updated field.

Change-Id: I3774e43c3d8a7e03eba9ce31c98b9177e1adad30
This is Tuleap 6.7.99.37

Change-Id: Ia4c15b579cbd4a102aeb2147ba63b3921cb839b9