The northern border of Israel has been relatively quiet since the cease-fire in south Lebanon went into effect Sunday morning. The only thing marring the silence was the shelling of Rosh Hanikra Tuesday, but no one was injured. Israel has warned that any recurrence of attacks on Israeli towns will bring a swift reaction. Mean-while, life has returned to normal in the Israeli border town of Metullah. On the Lebanese side, farmers ###working in the fields and orchards once again.