(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.

<?xml version="1.0" encoding="UTF-8" ?>
<backend-database>
    <!-- This is the default backend db configuration. -->
    <user>d4e</user>
    <password>d4e</password>
    <dialect>org.hibernate.dialect.PostgreSQLDialect</dialect>
    <driver>org.postgresql.Driver</driver>
    <url>jdbc:postgresql://localhost:5432/d4e</url>
    <validation-query>select 1 from rivers</validation-query>
    <max-wait>30000</max-wait>
</backend-database>