Projects can be assigned types

https://trello.com/c/GnVFdmsD/42-as-a-user-i-can-add-a-type-attribute-to-my-projects-when-they-re-created

![selection_025](https://cloud.githubusercontent.com/assets/8248100/5096193/e83ee632-6f3d-11e4-8bfc-5e83a5a0bc20.png)