[FIX] website_payment: add requirement on website

In order to be sure website is loaded and to allow searches in DOM require
on website was necessary. This is a partial revert of e66ba3ce1e
that was a bit hasty.

addons/website_payment/static/src/js/payment_acquirer.js

@@ -67,6 +67,7 @@ odoo.define('website_payment.payment_acquirer', function (require) {
 
 var ajax = require('web.ajax');
 var Dialog = require('web.Dialog');
+var website = require('website.website');
 
     var payment_methods = $('#payment_tokens_list');
 

addons/website_payment/static/src/js/payment_transaction.js

@@ -2,6 +2,7 @@ odoo.define('website_payment.website_payment', function (require) {
 "use strict";
 
 var ajax = require('web.ajax');
+var website = require('website.website');
 
 if(!$('.o_website_payment').length) {
     return $.Deferred().reject("DOM doesn't contain '.o_website_payment'");