dev#189214: Add managed libraries select in users edit/add form

library/ZendAfi/View/Helper/Admin/ProfileSelect.php

@@ -180,11 +180,14 @@ class ZendAfi_View_Helper_Admin_ProfileSelect extends ZendAfi_View_Helper_BaseHe
     $options = (new Storm_Model_Collection($bibs))
       ->collect(fn($bib) => $this->_option(ProfileSelect_Model::newFrom($bib)));
 
+    $params = ['name' => 'bib',
+               'id' => 'bib'];
+    if (count($bibs) === 1)
+      $param['disabled'] = 'disabled';
+
     return $this->_tag('select',
                        implode($options->getArrayCopy()),
-                       ['name' => 'bib',
-                        'id' => 'bib',
-                        'disabled' => 'disabled']);
+                       $params);
   }