Track downloads

Currently our downloads use the default closer.cgi script, but it'd be nice to track our downloads.

Besides providing a custom script, maybe we could do that with Google Analytics (we are already using it to track our visitor):

http://developers.google.com/analytics/devguides/collection/gajs/eventTrackerGuide
http://www.blastam.com/blog/index.php/2011/04/how-to-track-downloads-in-google-analytics/

Hopefully one day we would be closer to the figures of OOo https://blogs.apache.org/OOo/entry/apache_openoffice_one_year_50 xD