No cache

In response to the pen test, set cache headers as appropriate.
Merge pull request #431 from ministryofjustice/enhancement/no-cache

No cache
copy amends ..etc

- removed a few hardcoded links form the locale file
Use BarclayCard test gateway on all hosts except where ENV == 'prod'
Merge pull request #433 from ministryofjustice/bug-fix/correct-barclaycard-env

Use BarclayCard test gateway on all hosts except where ENV == 'prod'
Copy, locale, tests updates

- updated copy
- removed hardcoded paths from locale file
- updated tests to reflect copy amends
Merge pull request #434 from ministryofjustice/front-end/copy-updates-02-12

Front end/copy updates 02 12
Fix formatting

Indent two spaces and remove blank lines.
Send email copies of application by default

Claimant and representative emails are checked by default and can be
deselected to prevent emails being sent.