#11739 qa host

Those changes should let feedback being sent to http:// or https:// QA hosts.

To test it try FEEDBACK_URL in settings set to:
 - http://qa-staging.o...y.org
 - https://qa-staging.o...y.org

and send:
 - comment http://localhost/feedback/comment/ (remember about your email address).
 - error http://localhost/feedback/feedback/
 - try to crash web and send error from popup box handled by ajax

You should get email including:
 - New feedback was created on: http://qa-staging.o...y.org/qa/feedback...
 - New feedback was created on: https://qa-staging.o...y.org/qa/feedback...