CRM-14016 - Fix fatal error in Save Copy due to NULL instanceID.

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* CRM-14016: remove report instance from navigation via report settings
  http://issues.civicrm.org/jira/browse/CRM-14016
CRM-14016 - Use elseif instead of else if

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* CRM-14016: remove report instance from navigation via report settings
  http://issues.civicrm.org/jira/browse/CRM-14016
Merge pull request #2316 from davecivicrm/CRM-14016

CRM-14016 - Fix fatal error in Save Copy due to NULL instanceID.