Fix some failing travis CI tests: [#81223932]

https://www.pivotaltracker.com/story/show/81223932
More meaningful test (which passes) for LightweightActivity#questions.  [#81223932]

https://www.pivotaltracker.com/story/show/81223932
Deploy production to authoring.production now that authoring.concord is Load B.

[#80762428]
https://www.pivotaltracker.com/story/show/80762428
Restrict access to collaborators data endpoint in Portal  [#80460084]

https://www.pivotaltracker.com/story/show/80460084