When a user uses the new publish-comments option, the new patch set
email didn't contain the contents of the comments that were being
published. Actually getting these combined into one email will require a
fair bit of refactoring of templates.
In the meantime, just send the comments in a separate email, which from
the recipients' perspective is the same as if this feature didn't exist
and the author published comments via the web UI immediately after
pushing.
Change-Id: I20e542e1fb044ee678855fc83afcfaa6df65b326
93aaef4b69