Add additional payment method using Client Side Encrytion
Revert "Add additional payment method using Client Side Encrytion"

This reverts commit b1e885fea65aa62aeddd7735587d0734144cea7f.
Add additional payment method using Client Side Encrytion
Add client side encryption assets, models and view
Comply with latest spree CreditCard#name api

Improve test coverage on adyen gem validations
Loose spree version dependency
Merge branch 'client-side-encryption' of github.com:korki/spree-adyen into korki-client-side-encryption
Drop adyen.encrypt minified file
Use plain html for input in encrypted partial

No need for using rails helpers here since we don't want to submit card
info as plain text, therefore no name attributes on inputs
Pass encrypted data using the same as attribute name

Trying to make way to use same CreditCard model as spree core