Simple summary page to show download statistics

Got the data parsed and ready for real display.

Not so interested in the "real display" part, just the data part, so will leave it to others to pretty up, if they so wish.

![image](https://f.cloud.github.com/assets/4072455/2240727/8aa41d4a-9ca6-11e3-8c7b-da00aa6e0f77.png)

Will cross-merge to `release-0.11`.  This is admin code, so as long as it's not breaking the build, it's safe to merge away (which I will do).  Code review can happen at any time.