Use lint.LogOnErr for deferred Body/File/Client Close calls.
Use lint.Write for unchecked w.Write calls.
Fix bug in sync/sms.go where fmt.Errorf result was discarded
(replace with proper log.Error call).
This is a pretty big refactor of how communication works to start moving
us in the direction we want to go long-term. This adds the new
communication row and migrates existing reports to add rows for
communication.
There's also a bunch of automatic fixes from the new linter. I should
have added them separately, but whatever.
