Add option per project to enable Kanban

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

If you have enabled the Tuleap lab features, you will be able to have
a checkbox in AgileDashboard admin in order to enable Kanban

Change-Id: Idb3775e5180b76f829ddfbffed4be680b6c198b2
First step of new Kanban UI

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

If Kanban is enabled, display a dedicated zone in AD homepage

Change-Id: Ie60669c75ee421ec6b0dfbeac80a23fae49971b3
Merge commit 'refs/changes/79/3279/7' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  First step of new Kanban UI
  Add option per project to enable Kanban

Change-Id: Id00174c94a59050c4bc09a07656607a06fbd6f44
This is Tuleap 7.7.99.28

Change-Id: Ia7f691c7de6038047c5f97873034b6890d22b5d2