[#11] Tests: Add MemberServiceTest

Tests/Resources/Sql/ServiceDelete.sql

@@ -0,0 +1,9 @@
+-- deletes for ServiceTests
+
+DELETE FROM credit;
+DELETE FROM payment_variant;
+DELETE FROM delivery;
+DELETE FROM season;
+DELETE FROM area_commitment;
+DELETE FROM area_commitment_type;
+DELETE FROM member WHERE mgnr >= 200;