Remove FAKE_PAYMENTS (bug 893271)

- Remove FAKE_PAYMENT setting
- Removed associated sections from views, tests
- Remove unused template
Merge pull request #397 from JaredKerim-Mozilla/893271

Remove FAKE_PAYMENTS (bug 893271)
add in a single page app api (bug 957677)
Merge pull request #398 from andymckay/957677

add in a single page app api (bug 957677)
init helps