CRM-12622 - CiviReportTestCase - Set missing global variables

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* CRM-12622: Create framework for example report data files
  http://issues.civicrm.org/jira/browse/CRM-12622
CRM_Report_Form_Contribute_DetailTest - Update ($ vs USD)
CRM-12622 - Extract assertCsvArraysEqual

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* CRM-12622: Create framework for example report data files
  http://issues.civicrm.org/jira/browse/CRM-12622
Cleanup/Autoformat
Merge pull request #1277 from totten/master-reporttestcase

CRM-12622 - Fix regresion in CRM_Report_Form_Contribute_DetailTest