[IMP] sale: Improve the Sale order mail template.

Rename the attachment file name.

Restore the option : have the name of the customer who viewed the quotation on the email notification

TaskID: 1920476

closes odoo/odoo#30550

addons/sale/controllers/portal.py

@@ -158,7 +158,7 @@ class CustomerPortal(CustomerPortal):
         # Log only once a day
         if order_sudo and request.session.get('view_quote_%s' % order_sudo.id) != now and request.env.user.share and access_token:
             request.session['view_quote_%s' % order_sudo.id] = now
-            body = _('Quotation viewed by customer')
+            body = _('Quotation viewed by customer %s') % order_sudo.partner_id.name
             _message_post_helper('sale.order', order_sudo.id, body, token=order_sudo.access_token, message_type='notification', subtype="mail.mt_note", partner_ids=order_sudo.user_id.sudo().partner_id.ids)
 
         values = {

addons/sale/data/mail_data.xml

@@ -80,11 +80,11 @@
 <div style="margin: 0px; padding: 0px;">
     <p style="margin: 0px; padding: 0px; font-size: 13px;">
         % set doc_name = 'quotation' if object.state in ('draft', 'sent') else 'order'
-        Dear ${object.partner_id.name}
         % if object.partner_id.parent_id:
-            (${object.partner_id.parent_id.name})
+            Dear ${object.partner_id.name} (${object.partner_id.parent_id.name}),
+        % else:
+            Dear ${object.partner_id.name},
         % endif
-        ,
         <br /><br />
         Here is
         % if ctx.get('proforma')