Mass-award badges with this one strange trick!

Finally, I've completed the CSV badge awarder. It's pretty self-explanatory. You upload a CSV file listing badge IDs and emails, and Tahrir will award the badges. The two items do not need to be in a particular order, so a file like this will work:
```
abadge, spot@redhat.com
abadge, decause@gmail.com
oddshocks@riseup.net, abadge
```

I might be being too careful, but we probably want two +1s on this before merging, since it *does* involve uploading a file, and there might be a security matter that I didn't consider. I figure if there's an issue with how I did things, someone will notice right away.