Collect and display high level analytics about squadbox

[amyxzhang]

how many squads? How many harassing messages have been blocked?
Would be nice to put on the landing page at some point. Do we collect this info right now @kmahar? I suppose we must have for the user study?

[kmahar]

I don't believe we collect it now, no. the stats I got for the user study were just from grepping the logs I think...
number of squads is easy DB query, and number rejected is also easy if people have the website store rejected messages. but to keep the counts more accurate since not everyone will do that (and since people can also delete their rejected messages from the site permanently), we could just add a simple counter in the squad table in the DB.