This schema has been around since the dawn of time. It collects data
around the watch star activity.
Currently we don't use it for anything.
I think we should do something about this.
1) Create an automation script using SQL [A] that generates regular
reports showing the top ten watch articles on mobile on wikis for each
month and publish that somewhere. See Graph [C] to get an idea of what
this looks like for January.
2) We may want to do the above but in addition to this stop logging
clicks on the watchstar when logged out. The graph generated for
January [D] from this data is very different, quicker to run and much
more work safe.
3) Kill the schema altogether