MC-20549: Refactor CE modules E-mail templates to use scalars variables

- Added extra template variables back to templates

Author: Hwashiang Yu

app/code/Magento/Customer/view/frontend/email/account_new_no_password.html

@@ -7,6 +7,7 @@
 <!--@subject {{trans "Welcome to %store_name" store_name=$store.frontend_name}} @-->
 <!--@vars {
 "var store.frontend_name":"Store Name",
+"var this.getUrl($store, 'customer/account/')":"Customer Account URL",
 "var this.getUrl($store,'customer/account/createPassword/',[_query:[id:$customer.id,token:$customer.rp_token],_nosid:1])":"Create Password URL",
 "var customer.email":"Customer Email", 
 "var customer.name":"Customer Name"