Validate that amount of credit to buy is in valid range
Fix sentry issue SGX-JMP-4
Typo not caught by tests because this method had none. Add a test, fix the typo.
add_to_form no longer needs a promise or a network call, instead we use
a factory to get that data up front and inject the dependency.
New BuyAccountCreditForm#parse to get the relevant data back out of an
Some changes to Transaction and sgx_jmp.rb to use the new method
Split logic out into testable objects
Rubocop clean. Good test coverage of helper objects.