PW-708 Add live_endpoint_url_prefix to support checkout live endpoints

Add live endpoint prefix to initialize client

PW-306 Secure Fields integration for card payments

- Card components instead of CSE
- 3D secure adjusted
- Installments adjusted

- Dependent php-api-library change (on the branch PW-306)

password
- Remove username, password (test, live) from admin/store configuration/
required settings. Add API Key instead
- Get secure fields SDK based on isDemo
- Include checkout js components
- Remove CSE library and tokens

Assign default values to billing address fields

PW-563 Add applicationInformation into M2 

PW-382 Set IssuerId in checkout

required php-api-library min 1.5.2
Using storeId for retrieving wsUsername and wsPassword

new AppInfo parameters in the request

function instead of WET

send it with every request

Let other payment methods also use the issuer drop down list

PW-642: Creating credit memos after notification from BO

Revert "remove storeId check so we can show all billing agreements"

remove storeId check so we can show all billing agreements

PW-595 use default getData() for the adyen redirect payment method.

PW-557 update readme

B: Use order repository to load order instead of orderFactory

[VM-297] +: Also show frontend payment link when nothing is invoiced yet

Correct NL translation for Credit Card Owner