[FIX] website_sale,website_quote: form must be in dom to be submitted

Revision 15f27b2 introduced a dynamic form submission to
avoid some payment transaction problems.

It so happens that form submission in jquery necessitates
said form to actually be in the dom (at least for Firefox
and some version of MSIE); this revision ensures that the
form is updated in the dom by the rpc call then properly
submitted.

addons/website_quote/static/src/js/website_quotation.js

@@ -212,7 +212,8 @@ odoo.define('website_quote.payment_method', function (require) {
       var token = href.match(/quote\/[0-9]+\/([^\/?]*)/);
       token = token ? token[1] : '';
       ajax.jsonRpc('/quote/' + order_id +'/transaction/' + acquirer_id + (token ? '/' + token : ''), 'call', {}).then(function (data) {
-          $(data).submit();
+          $form.html(data);
+          $form.submit();
       });
    });
 });

addons/website_sale/static/src/js/website_sale_payment.js

@@ -30,7 +30,8 @@ $(document).ready(function () {
         return false;
       }
       ajax.jsonRpc('/shop/payment/transaction/' + acquirer_id, 'call', {}).then(function (data) {
-          $(data).submit();
+          $form.html(data);
+          $form.submit();
       });
    });