Add Run Calendar View

Woo hoo! Here's my super secret project. It's very github-inspired, but I kinda like it :)

Now that I think about it, might have to put a fix in for your silly run log (with 0 distance runs), but it looks alright!

![image](https://f.cloud.github.com/assets/160236/142720/b31ad9d0-7312-11e2-9252-9275d571fbf7.png)