Revert "Revert "Merge pull request #65 from mythmon/security-settings""
Revert "Revert "Merge pull request #65 from mythmon/security-settings""

This reverts commit 913f49db67c8b1d92859d7eaeca5e57903f80855.

mozilla/normandy,Osmose/normandy,mozilla/normandy,Osmose/normandy,Osmose/normandy,Osmose/normandy,mozilla/normandy,mozilla/normandy