CRM-13765 - Initialization error throws a undefined function php error

http://issues.civicrm.org/jira/browse/CRM-13765
CRM-13760 - add comments to clarify debug call

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* CRM-13760: "Geocoding failed. Message from Google: OVER_QUERY_LIMIT" should not be fatal
  http://issues.civicrm.org/jira/browse/CRM-13760