Fix defect #1886: allow to dump tracker structure (fix test on tracker userIsAdmin)
Refactor tests to make them throw errors on notices

Change-Id: Iaabc58fd0efc504b731f77f7dd5be72f25e19343
Merge commit 'refs/changes/47/247/2' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  Fix defect #1886: allow to dump tracker structure (fix test on tracker userIsAdmin) Refactor tests to make them throw errors on notices
Tuleap 5.8.99.15