Web Test Fix

Fixes For -
1. WebTest_Activity_StandaloneAddTest::testStandaloneActivityAdd
2. WebTest_Activity_IcalTest.testStandaloneActivityAdd
3. WebTest_Activity_ContactContextAddTest.testContactContextActivityAdd
4. WebTest_Activity_ContactContextAddTest::testSeparateActivityForMultiTargetContacts
5. WebTest_Case_CaseCustomFieldsTest::testAddCase
6. WebTest_Case_CaseCustomFieldsTest::testCaseCustomNoteRichEditor
7. WebTest_Case_AddCaseTest.testStandaloneCaseAdd