When approving/denying a grant, enable message to be sent accompanying the decision.

[mjpritchard]

See https://secure.helpscout.net/conversation/1986209555/55753/

Would be useful (even if approving) to send message saying "ok, approved, but please only use it in this way..." or "denied for this reason: ...."

[amanning9]

I can see that this might be useful, but I also think that this user's use-case could be fulfilled by simply updating the description of the service to include whatever terms/information they need to send to all applicants.