CRM-13714 - use joomla 3.x to render error template - title still buggy

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* CRM-13714: Display fatal error for Joomla 3.x
  http://issues.civicrm.org/jira/browse/CRM-13714
Merge pull request #1986 from dlobo/CRM-13714

CRM-13714 - use joomla 3.x to render error template - title still buggy