request #6413 - Cumulative chart legend too extensive

Change-Id: I609c81e4fcf422d2f73f154ace375bd3ba73bcaf
Merge commit 'refs/changes/54/2054/7' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6413 - Cumulative chart legend too extensive

Change-Id: I29b5cc4daaab8ec1ec0f4b0937598a0c35af32cf
This is Tuleap 6.11.99.23

Change-Id: I64b9aa4b71ab9472e739d87b75f6c7db97c9958c