New price product names

Replacing 'standard' and 'enterprsie' with the new names: basic and pro. Also adding pricing detail to Pro after conferring with Hiroki. Lastly, I amended the one link within the branch that pointed to /pricing/#/enterprise

Please review/merge @jamesshedden 

![image](https://cloud.githubusercontent.com/assets/1246990/4491237/89220f5c-4a36-11e4-801d-0913daa194b0.png)