get action fixes for activitysets, CRM-14725

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* CRM-14725: Edit Case Type - Use AJAX load/save
  https://issues.civicrm.org/jira/browse/CRM-14725
fixes for create mode - case type api, CRM-14725

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* CRM-14725: Edit Case Type - Use AJAX load/save
  https://issues.civicrm.org/jira/browse/CRM-14725