Display kanban boxes on AD homepage

This task is part of story #7575 create a "new kanban" on AD homepage

When one (or some) Kanban are created by an admin, a minimal box is displayed in AD homepage.
For now, number of closed and open element is always 0.

Change-Id: I5119b9cd9aae37624879e4504d9357cdd9b98876
Merge commit 'refs/changes/90/3290/2' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  Display kanban boxes on AD homepage
This is Tuleap 7.7.99.38

Change-Id: I497f9e859d74398d1f56f2dae9cce8afb90329fb