adds specs for check_for_assign_on_join_and_update_students_array_if_true
adds specs for check_for_assign_on_join_and_update_students_array_if_true

empirical-org/Empirical-Core,empirical-org/Empirical-Core,empirical-org/Empirical-Core,empirical-org/Empirical-Core,empirical-org/Empirical-Core,empirical-org/Empirical-Core,empirical-org/Empirical-Core