tasks #7154: fix system event not appearing in list

Change-Id: I8e6c9f51289c2186620770d8482ec3c717451d90
Merge commit 'refs/changes/21/2721/4' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7154: fix system event not appearing in list

Change-Id: Ib6855a2aa6a657beaa629f17a8f2c939a0bd1c3d
This is Tuleap 7.2.99.24

Change-Id: Id9a0b2963890b5935f2e96e3fde548ff9198192c