dev #135950 Performances

• limit same head key record loading
• digital ressources : do not try to load more than once inexisting doc types

tests/application/modules/opac/controllers/NoticeAjaxControllerTest.php

@@ -1332,7 +1332,8 @@ class NoticeAjaxControllerDVDSeriesTest extends AbstractControllerTestCase {
     Storm_Test_ObjectWrapper::onLoaderOfModel('Class_Notice')
       ->whenCalled('findAllBy')
       ->with(['clef_chapeau' => 'OZ',
-              'order' => 'tome_alpha desc'])
+              'order' => 'tome_alpha desc',
+              'limit' => 20])
       ->answers([$oz_season2, $oz_season3]);
 
 
@@ -1415,7 +1416,8 @@ class NoticeAjaxControllerPeriodiqueSerieTest extends NoticeAjaxControllerPeriod
     $this->onLoaderOfModel(Class_Notice::class)
       ->whenCalled('findAllBy')
       ->with(['clef_chapeau' => 'FAKIR',
-              'order' => 'tome_alpha desc'])
+              'order' => 'tome_alpha desc',
+              'limit' => 20])
       ->answers([$this->_fakir_56, $this->_fakir_57]);
 
     $this->dispatch('/noticeajax/series/id_notice/234');