Custom fields missing from View Relationship screen

If custom data is entered for a Relationship - when you View the relationship - the custom data fields and values are NOT shown.

This is due to an problem in 61 of CRM/Contact/Page/View/Relationship.php.

Relationship type passed to CRM_Core_BAO_CustomGroup::getTree should be just the primary key of the relationship type (without the directional string):

$relType = $viewRelationship[$this->_id]['civicrm_relationship_type_id'];