Fix request #5856 - Tracker v5: Description of attachment not displayed

Change-Id: I91f798864b895da59d9fe2e61cd04e8c1f789159
Merge commit 'refs/changes/45/1645/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix request #5856 - Tracker v5: Description of attachment not displayed

Change-Id: I6ca394c74c342b226f592eca3244694cc5d98199
Tuleap 6.9.99.1

Change-Id: Id390c550bd08023ec026371810a0d19f23b1b2fd