Add photo attachment to user.

Trying to keep this simple.

I did not configure it with S3 yet, figured we can do that when it gets deployed.

Here is what it looks like:

![screen shot 2014-01-15 at 4 04 55 pm](https://f.cloud.github.com/assets/928367/1924958/faa4e480-7e29-11e3-9c12-96ba5821d157.png)

Extra large photos everywhere.

Seriously though:

![screen shot 2014-01-15 at 4 15 20 pm](https://f.cloud.github.com/assets/928367/1924972/2e9ddc56-7e2a-11e3-898d-808a2a165ea0.png)


![screen shot 2014-01-15 at 4 12 04 pm](https://f.cloud.github.com/assets/928367/1924961/08505b64-7e2a-11e3-96f1-d90759f0cdc0.png)