making password reset email link have the current site's domain rather than edx.org hardcoded.

use the request's hostname rather than settings.SITE_NAME for activation emails

getting rid of terrible hack in favor of re enabling the dispatcher to sync w/ the comment service

partial credit for an inputfield

May want to couple this (in the future) with some UI feedback to indicate partial credit was awarded.  

Pull the http or https from the forwarded proto for the xqueue callback ...