Separation of Copy from Code

### Description

Currently all of the copy (text) is part of the codebase.

We should separate these out for a number of different reasons:

1) Our ff cloud offering has specific information around things like pricing or policy.
2) We want to be able to modify copy without having to cut a new release
3) Enterprise customers may want to set their own messaging
4) Internationalisation.

The sooner we do this engineering work to make the separation the smaller the task.