Wait, so it *is* supposed to be like the active editor metric?  To be very clear, we have two possible questions we can be answering here, and only one of them is like the active editor metric.  Both of these questions will show results for X <- {each of the last 12 months}

1. How many people, of those that created their account on mobile, made at least 5 edits in month X?  [THIS IS LIKE ACTIVE EDITOR]

2. How many people created their account on mobile in month X, and made at least 5 edits since then?

I've implemented both, but there is a pretty big difference so we need to figure that out before moving on.

Dan