request #7484: Search in projects can take a very long time

Change-Id: I8bd57930351beeb49644f901f38a176af7914b83
Merge commit 'refs/changes/47/3047/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7484: Search in projects can take a very long time

Change-Id: I5ef819b56017ffc85aaf5d727208eedf968b1bc7
Tuleap 7.5.99.11

Change-Id: Iea4c1b359622af37b6bdebe681ad5a58cf496c1a