request #7332 Cannot uninstall and re-install tracker plugin from web interface

Change-Id: I0fcb67d9f500d679cd18cb727f12f6bee190f0d3
Merge commit 'refs/changes/72/2872/1' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7332 Cannot uninstall and re-install tracker plugin from web interface

Change-Id: Ia45c660c125b854a1273513312a6956c3daf5f91
This is Tuleap 7.3.99.46

Change-Id: Ida0e054348e33eb52dbbbd62139412696e6439ff