Breaking: #437 - Refactor allowedCountries TypoScript Configuration

See Issue 413 <https://github.com/extcode/cart/issues/413

Description

In order to streamline the TypoScript configuration the configuration for allowedCountries was changed.

Affected Installations

All installations using an own configuration for plugin.tx_cart.setting.allowedCountries or override the Resources/Private/Partials/Cart/OrderForm/Address/Billing.html or Resources/Private/Partials/Cart/OrderForm/Address/Shipping.html partial.

Migration

TypoScript

Adapt the new TypoScript configuration structure. Instead of:

plugin.tx_cart {
    settings {
        allowedCountries {
            de = Deutschland
            at = Österreich
            ch = Schweiz
        }
        defaultCountry = de
    }
}

use a structure like this:

plugin.tx_cart {
    settings {
        countries {
            preset = 1
            options {
                1 {
                    code = de
                    label = Deutschland
                }
                2 {
                    code = at
                    label = Österreich
                }
                3 {
                    code = ch
                    label = Schweiz
                }
            }
        }
    }
}

Templates (Partials)

Use settings.countries.options instead of settings.allowedCountries in the partial, and add both optionLabelField="label" and optionValueField="code" to the country selectors.