Use a google form to get each submission for a commercial key.

When a user wants to register for a commercial key, the registration form will post data using google form API.
Each registration will create an entry in the [response spreadsheet](https://docs.google.com/a/guardian.co.uk/spreadsheets/d/1cAoD0gAHcuem-7PjIeT4ZaUS7xmELlit89CHgCR4ZlI/edit#gid=1947666435).

Then depending of the API call response, we display a status message.

![screen shot 2014-07-15 at 15 37 38](https://cloud.githubusercontent.com/assets/615085/3586175/9ac33c3c-0c2d-11e4-8d1f-6cf96fbdafdf.png)


![screen shot 2014-07-15 at 15 05 41](https://cloud.githubusercontent.com/assets/615085/3585813/1b99503e-0c2a-11e4-9afd-cc6518d7f15e.png)