CRM-13279 adding birth date and gender as column options to participant listing report.

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* CRM-13279: Include gender and date of birth in (participant) reports
  http://issues.civicrm.org/jira/browse/CRM-13279
Merge pull request #1559 from davecivicrm/CRM-13279

CRM-13279 adding birth date and gender as column options to participant ...