story #7521 complete usage statistics

Change-Id: I4f3b76fbadb4da30d21e7846c63d02df6945fd35
Merge commit 'refs/changes/41/3141/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  story #7521 complete usage statistics

Change-Id: I38fc13f11563c43bd827a46c1fd166bdebd55c34
This is Tuleap 7.6.99.5

Change-Id: I78ca8303f93a53ed85b66a53b867ef6e8b9d280e