CRM-13779 - CiviEvent - fire skipPaymentMethod on select boxes

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* CRM-13779: Events with Price Sets with only Select boxes don't allow payment
  http://issues.civicrm.org/jira/browse/CRM-13779
Merge pull request #2023 from PalanteJon/CRM-13779

CRM-13779 - CiviEvent - fire skipPaymentMethod on select boxes