Gem downloads are fetched from the DB using the download column to
order, however the real number comes from Redis, so we need to sort the
list again by that counter.
That also fix the stats bar size, as the max was not calculated right before.
This reverts commit 2c35a6f, reversing
changes made to f78231f.
This is blocking deploys, as we dont have hstore on pg production, and
we need to enable that module. After we add that I will add this back