Webtest Fix

Fix for following webtests:

WebTest_Event_AddPricesetTest::testDeletePriceSetforEventTemplate
WebTest_Event_AddPricesetTest::testEventWithPriceSet
WebTest_Event_ParticipantSearchTest::testParticipantSearchEventName
WebTest_Event_ParticipantSearchTest::testParticipantSearchEventDateAndType
WebTest_Member_OfflineMembershipRenewTest::testOfflineMembershipRenew
WebTest_Member_OfflineMembershipRenewTest::testOfflineMemberRenewOverride