* -trace flag controls whether or not to enable metrics-gathering
and the /debug/* HTTP endpoints
* -graphite-host flag controls where metrics should be sent
* timer.ae.handle metric tracks execution time of AppendEntriesRequest
fix(server/config.go): ensured params are changeable from config file and env
fix(server/server.go): removed unnecessary debug line
fix(server/timeout.go): removed a commented block
style(server/transporter.go): put explicit vars to replace timeout expressions
style(tests/server_utils.go): ran gofmt to clean up indenting