Show card counts in card browser

I know I'm a bit late to the party, but I was hoping to still get the card counts in the card browser into the 2.2 release. I think it's a feature that people will miss otherwise.

![screenshot_2014-06-29-17-30-46](https://cloud.githubusercontent.com/assets/527708/3424688/bb59f9e6-ffde-11e3-851e-d41fd79f388e.png)