Port 'about' content from FAQ page to About

Incorporates into 'about' and removes:

 What is the Public Whip?
How does the Public Whip work?
What time period does it cover?

 Legal question: what can I use this information for?
Can I play with the software?
What licence is the data under?
What organisation is behind the Public Whip?

Can I help with the project?
How can I contact you?