Manual tracking for Data Expedition

@vanessa I saw in last weeks community call that there are some fustration about email tracking not being perfect.

Would it be possible to make tracking explicit and manual? Iow, we prompt the user to click on a specific link? Maybe we can make a page for every week with the gravatars of everyone who clicked the link (something like a voluntary class register)

Just a though, nothing important.

So I am meeting with Lucy tomorrow (in person!) to discuss whether we want to run another iteration of Data Explorer Mission, or do something different. If we run it again, we’ll need to triage zhe featurezzzz together.