Upgrade Balanced JS
Use PayableResourceSerializer on meta method
Remove unused method
Remove references to URIs in attributes

Now standardized to "href".
Use Balanced::BankAccount#find to fetch resource using API
Remove deprecated methods of Rspec
Call #debit directly in payment instrument

Following instructions of Balanced API 1.1
Remove Verification#bank_account own definition

Balanced started to expose a #bank_account method in the Verification
resource.
Remove migrations from dummy app

CI reports being duplicated.