make startup message consistent

services/real-time/app.coffee

@@ -63,7 +63,7 @@ host = Settings.internal.realTime.host
 
 server.listen port, host, (error) ->
 	throw error if error?
-	logger.log "real-time-sharelatex listening on #{host}:#{port}"
+	logger.info "realtime starting up, listening on #{host}:#{port}"
 	
 # Stop huge stack traces in logs from all the socket.io parsing steps.
 Error.stackTraceLimit = 10