Webtest fixes

Following changes were made in files to solve webtest issues.
Each issues were not geeting element id or the xpath which are now fixed
1) WebTest_Contribute_AddPricesetTest.testAddPriceSet
2) WebTest_Contact_AddTest::testHouseholdAdd.
3) WebTest_Contact_SearchBuilderTest::testSearchBuilderContacts.
4) WebTest_Contribute_AddPricesetTest.testAddPriceSet