small refactoring

NetBiblio.php

@@ -728,14 +728,8 @@ class NetBiblio extends WebService
      */
     public function ListOfReaders()
     {
-        $s = new BookSearch();
-        $s->addQuery(1, 'visible');
-        $s->addFacetField('reader');
-        $s->setFacetLimits(2000, 10);
-        $results = $s->getResults(0, 0);
-
         $readers = array();
-        foreach($results['facets']['facets']['reader'] as $name => $count) {
+        foreach(BookSearch::GetTerms('reader') as $name => $count) {
             $parts = explode(" ", $name);
             $firstname = array_shift($parts);
             $lastname = implode(" ", $parts);