Treat no solitude buyer as no PIN (bug 1015212)
Add seller to generic transaction(Bug 1014792)

- Add paramter to API call for Boku, Reference
- Update tests
    - ensure seller included in calls to start transaction
    - refactor tests to not depend on set_mocks
Merge pull request #465 from JaredKerim-Mozilla/1014792

Add seller to generic transaction in Webpay (Bug 1014792)
Merge pull request #467 from mstriemer/no-solitude-buyer-has-no-pin-1015212

Treat no solitude buyer as no PIN (bug 1015212)
Update purchase tests (bug 1015288)

- Pass in seller when starting purchase
Merge pull request #468 from JaredKerim-Mozilla/1015288

    Update purchase tests (bug 1015288)
Return a 204 when creating a PIN (bug 1014872)
Merge pull request #469 from mstriemer/error-after-pin-creation-1014872

Return a 204 when creating a PIN (bug 1014872)
add in payments-alt settings
Merge pull request #470 from andymckay/payments-alt

add in payments-alt settings
how to use Firefox OS Simulator with webpay