Fix unreleased bug - request #6276: No longer possible to select the parent epic in new modal

Change-Id: Iefd2467111722c9e39a24357bba31c8bea06f73c
Merge commit 'refs/changes/62/1962/7' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix unreleased bug - request #6276: No longer possible to select the parent epic in new modal

Change-Id: I52916b51351575929d6bde772d750ab684165616
This is Tuleap 6.10.99.45

Change-Id: Ibdd9d04f049113dad54a2402f259b4ce1846f77b