CRM-14567, fixed the bug with initialization of TCPDF

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* CRM-14567: Replace DOMPDF with TCPDF for "Create PDF Letter"
  https://issues.civicrm.org/jira/browse/CRM-14567
removed unwanted code CRM-14567

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* CRM-14567: Replace DOMPDF with TCPDF for "Create PDF Letter"
  https://issues.civicrm.org/jira/browse/CRM-14567
CRM-14567, switch back to dompdf, because tcpdf does not support css / classes that breaks layout for reports

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* CRM-14567: Replace DOMPDF with TCPDF for "Create PDF Letter"
  https://issues.civicrm.org/jira/browse/CRM-14567
Merge pull request #3587 from kurund/CRM-14567

Crm 14567