Fix request 6185: Users cannot edit couple of artifacts after the upgrade

Change-Id: Ide8644ddd454b54dc26d1d46ba7ed3b7303c0728
Merge commit 'refs/changes/28/1528/2' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix request 6185: Users cannot edit couple of artifacts after the upgrade

Change-Id: I23f78e65df6d5979ee2457daf967884b9a41032f
This is Tuleap 6.7.99.28

Change-Id: Iaeea7b9991a923d2bc8bf386910eaa77aa19b87a