Create go trends/distributions page

[vash3g]

so things that could be of interest are: are there more/less activity compared to before?
and activity could me: # go players, # games played, # tournaments, etc
other things of interest could be seasonality effects and regional effects
i.e. where are the activity happening?

[amj]

We've got a graph of games played going back to the 90s. Not sure if we'd like to make rank distributions, etc, totally public; will bring it up to Andy.

Closed for now.