request #6972 : bug fix- previously hidden fields are now visible and editable for tracker admins

Change-Id: I3dc19fed014739938a083132a18923b7797c9123
Merge commit 'refs/changes/35/2535/2' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6972 : bug fix- previously hidden fields are now visible and editable for tracker admins
This is Tuleap 7.1.99.15

Change-Id: I31df901eacac82a6872bb74c00bbe74a6a452b52