Initial ODI styling

Here's the initial work on the ODI styling, see the template page main.html to see how it looks and for markup examples for the different components. Comments welcome on refinements! It looks like this:

![ODI Template](https://f.cloud.github.com/assets/395050/191430/a8cbe8b8-7f36-11e2-907d-c35d1cd6a039.png)