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_confirmation.html

@@ -8,6 +8,7 @@
 <!--@vars {
 "var store.frontend_name":"Store Name",
 "var this.getUrl($store,'customer/account/confirm/',[_query:[id:$customer.id,key:$customer.confirmation,back_url:$back_url],_nosid:1])":"Account Confirmation URL",
+"var this.getUrl($store, 'customer/account/')":"Customer Account URL",
 "var customer.email":"Customer Email",
 "var customer.name":"Customer Name"
 } @-->

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

@@ -7,6 +7,7 @@
 <!--@subject {{trans "Reset your %store_name password" 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])":"Password Reset URL",
 "var customer.name":"Customer Name"
 } @-->

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

@@ -6,6 +6,7 @@
 -->
 <!--@subject {{trans "Your %store_name password has been changed" store_name=$store.frontend_name}} @-->
 <!--@vars {
+"var customer.name":"Customer Name",
 "var store.frontend_name":"Store Name",
 "var store_email":"Store Email",
 "var store_phone":"Store Phone"