Add Exception when password is empty in User::hashPassword()
Add Exception when password is empty in User::hashPassword()

fabrixxm/friendica,fabrixxm/friendica,tobiasd/friendica,fabrixxm/friendica,friendica/friendica,friendica/friendica,fabrixxm/friendica,annando/friendica,tobiasd/friendica,annando/friendica,annando/friendica,annando/friendica,friendica/friendica,tobiasd/friendica,friendica/friendica,tobiasd/friendica,friendica/friendica,tobiasd/friendica,annando/friendica,fabrixxm/friendica