774 fix contact form email issue

[jsjiang]

@sfisher Hi Scott,
Here are the changes:

• replace the wrapper function django.core.mail.send_mail() which does not support reply_to with the lower level class EmailMessage. We need the the reply_to field to store user entered email which will be used to generate help desk email
• bug fix to the proc-cleanup-async-queues_v2.py script - the last_id = refId.pk statement should be inside the loop otherwise "None" error will be generated when query returns no results.

Please review and let me know if you have questions.

Thank you

Jing

[sfisher]

Thanks for replacing this function. It sounds like Adam got the emails and it is working.

It make sense for the other one to put it inside the loop so it's not None.