CRM-14486 - Add prefetch TRUE for empoweredBy setting so it is included in config object.

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* CRM-14486:
  https://issues.civicrm.org/jira/browse/CRM-14486
Merge pull request #3250 from davecivicrm/CRM-14486b

CRM-14486 - Add prefetch TRUE for empoweredBy setting so it is included ...