Send email from noreply address (Bug #738263)

Per bug 738263, send email from the noreply address and
set the reply-to address to the user email if the
hideemail flag isn't set.

Change-Id: Ia9baa95413a73d3d7408012ae59e5420c65b2d39
Signed-off-by: Nigel Cunningham <nigelc@catalyst-au.net>
Merge "Send email from noreply address (Bug #738263)"