updates to upstream bec21d80a58403a388d175cd14f994ba7adefd3f 12.02.2016

removes sprint boards
changes burndown view logic to use new maniphest points field
Note: this is a breaking change for existing points data!
See secure.phabricator.com/T10350 for points migration details.
adds profile panels for phragile and burndown view in sprint project profile view
removes action menu and event listener

Change-Id: I33e0838a5c7646e40efb2a58e7ee149d04361742