License and attribution

Resource pages, such as _Outlines_ and _Cheatsheets_, now contain a friendly link in the header for info on the license and attribution of Materials.

![screen shot 2014-01-14 at 10 57 53 am](https://f.cloud.github.com/assets/352082/1913204/8caff134-7d45-11e3-8f34-c9a7adac840b.png)
![screen shot 2014-01-14 at 10 57 41 am](https://f.cloud.github.com/assets/352082/1913205/8cb01452-7d45-11e3-9a46-5150346a8d23.png)