CRM-13086 Api improvements to support webform_civicrm 4

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* CRM-13086: Support payments via Drupal Webforms
  http://issues.civicrm.org/jira/browse/CRM-13086
whitespace fixes
fix for WebTest_Contact_AddTest
fixes for WebTest_Case_ActivityToCaseTest
Merge pull request #1403 from kurund/test-fixes

few more webtest fixes
Merge pull request #1393 from colemanw/transactApi

CRM-13086 Api improvements to support webform_civicrm 4
fixes for WebTest_Contact_GroupAddTest
Merge pull request #1404 from kurund/webtest-fixes

fixes for WebTest_Contact_GroupAddTest