Not setting Mixpanel People profile property at all since build released Nov 21

https://mixpanel.com/project/2202789/view/143365/app/insights/#G1UFR9kudDRr

Could legitimately means we didn't trigger code to set any profile property, but it has always been set prior to Nov 21, better to check. In the graph, when `Android Devices = false`, it means it was not set.

Setting a property would be done with something like `getPeople().set(xxx)`