CRM-12846, fix for test case failure - civipledge wasn't enabled by default

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* CRM-12846: API support for toggling components by storing 'enableComponents' config in settings table
  http://issues.civicrm.org/jira/browse/CRM-12846
Merge pull request #1147 from deepak-srivastava/toggle

CRM-12846, fix for test case failure - civipledge wasn't enabled by default