request #7669 AD: only one milestone is displayed in past section

Change-Id: I4ddac1ca6ab8a5c9eb59f6db6db7f326281a099f
Merge commit 'refs/changes/31/3331/1' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7669 AD: only one milestone is displayed in past section
This is Tuleap 7.7.99.61

Change-Id: Ic89d125be602c9cbf17c89a30b5e4b4c2f59fcc3