* integration test files can now have custom file extensions (e.g: .pdf, .html, .sms.txt)
 * removing hard coded list of reports
 
 TODO: expected integration files need to be updated, pending GD discrepancy issues

git-svn-id: http://dev.piwik.org/svn/trunk@6883 59fd770c-687e-43c8-a1e3-f5a4ff64c105