remove reference to shipment.adjustment

shipment.adjustment no longer exists so we can kill this. also wasn't
tested, so no need to change test cases.

My understanding is with the adjustment refactoring we don't need to
deal with the open/close anymore anyway.
handle credit card names with spaces

this addresses a change from https://github.com/spree/spree/commit/71d4deed1aa815a2727357f2c35e2f544f5f1959

Fixes #4770
Update payment state any time a completed order item change

Fixes #4411
Fixes entering localized amounts for payments

While running Spree in Dutch locale, adding a Payment recognizes the decimal separator as thousands separator. So when using the pre filled value (e.g. 45.21) this will be converted to a much larger amount (4521.00). The fix makes sure that a localized value is filled in (45,21 instead of 45.21).

Tested on Spree 2.2.1

Fixes #4753