Adapt to new Solr config

mobile.netbiblio.php

@@ -316,14 +316,14 @@ class NetBiblio extends WebService
         $bs = new BookSearch();
 
         if (isset($queryArray['queryType'])) {
-            $bs->addSortField('author_s', SolrQuery::ORDER_ASC);
-            $bs->addSortField('title_s', SolrQuery::ORDER_ASC);
+            $bs->addSortField('author', SolrQuery::ORDER_ASC);
+            $bs->addSortField('title', SolrQuery::ORDER_ASC);
             $bs->addSortField('producer');
             $bs->addSortField('mediatype', SolrQuery::ORDER_ASC);
         } else {
             $bs->addSortField('availabilitydate');
-            $bs->addSortField('author_s', SolrQuery::ORDER_ASC);
-            $bs->addSortField('title_s', SolrQuery::ORDER_ASC);
+            $bs->addSortField('author', SolrQuery::ORDER_ASC);
+            $bs->addSortField('title', SolrQuery::ORDER_ASC);
         }
 
         if (isset($queryArray['queryText']) && strlen($queryArray['queryText']) > 0) {