(issue1754) Only create new Recommendations I belive that this was the original intent of this function otherwise why create a list of newRecommendations at all if we always recreate all Recommendations again. With the side effect that old recommendations had no master artifact the created artifacts of already existing artifacts did not have enough information to live and were not shown in the client so this problem was hidden.

next.gauge.id = \
    SELECT GAUGES_ID_SEQ.NEXTVAL AS gauge_id FROM DUAL
next.timeinterval.id = \
    SELECT TIME_INTERVALS_ID_SEQ.NEXTVAL AS time_interval_id FROM DUAL
next.discharge.id = \
    SELECT DISCHARGE_TABLES_ID_SEQ.NEXTVAL AS discharge_table_id FROM DUAL
next.discharge.table.values.id = \
    SELECT DISCHARGE_TABLE_VALUES_ID_SEQ.NEXTVAL AS discharge_table_values_id FROM DUAL