CRM-13750 Add search by permissioned relationship to Advanced Search.

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* CRM-13750: Advanced search - add permissioned relationship as a criteria
  http://issues.civicrm.org/jira/browse/CRM-13750
Merge pull request #1977 from davecivicrm/CRM-13750

CRM-13750 Add search by permissioned relationship to Advanced Search.