Use d3 to display a burndown chart in standup view

Change-Id: I51d25ab58c28c5ed62dfcd0773ec10ce4656e320
Verify the request before going RESTFul

When cookie base authentication, we can be either http or https
When token based authtentication, we can only be https unless debug mode is
active

Change-Id: I5f2ddf256fa0446e9c73109abbd63dbfc093f0f3
Add OPTIONS|GET /milestones/:id/burndown

Change-Id: I00d9ee60d55dad944913eec89297009593fb0b71
Fix permission check for restricted & private projects

Change-Id: Ib8b52b51f46822dbaa2f7c3084e187d210b6e641
Display real values on burndown

Change-Id: I02115a77688f52fcf5ed8b16ecfa6c1385969a52
Fix REST tests

Change-Id: I63574717e0ab24bd2fe022d1ecb040436f5904e9
Merge remote-tracking branch 'gerrit/5802_burndown_in_stand-up_view' into tuleap-stable-master

* gerrit/5802_burndown_in_stand-up_view:
  Fix REST tests
  Display real values on burndown
  Fix permission check for restricted & private projects
  Add OPTIONS|GET /milestones/:id/burndown
  Verify the request before going RESTFul
  Use d3 to display a burndown chart in standup view

Change-Id: I3e56a7ce658dcd9f45f3f5adf9c6bd4c83fc71b6
Tuleap 6.9.99.3

Change-Id: If92088b96019977fdc097a3272e703b098dc1992