terms acceptance during login, checkout connection to user account and login process

config/checkout.php

@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * Per-site settings for the cart + checkout module (see
+ * App\Providers\CheckoutModuleServiceProvider). Becomes the package's
+ * publishable config when the module moves to boboko-core.
+ */
+return [
+
+    /*
+     * Name of the storefront's login route. The checkout's login tab and the
+     * confirmation page link to it with `?redirect=<checkout path>`, so the
+     * login page must send the shopper back there afterwards (3dealer's
+     * Auth\LoginController does). null: no login offered in checkout at all.
+     */
+    'login_route' => 'login',
+
+];