CC and MIT license inclusion

[Pivotal Chore 67910808](https://www.pivotaltracker.com/story/show/67910808) Terms of Service and Privacy Policy on website

- Removes restrictive boilerplate copyright notice
- Adds Creative Commons Attribution license in context of site content
- Adds MIT license in context of source code by rendering the `LICENSE` file so that this can be altered in-place in future
:+1: