Issue #2332709 by swentel, unstatu | dawehner: Fixed Link to add a view mode...

Issue #2332709 by swentel, unstatu | dawehner: Fixed Link to add a view mode of a certain entity type is wrong.

core/modules/entity/src/EntityDisplayModeListBuilder.php

@@ -114,7 +114,7 @@ public function render() {
         $table['#weight'] = -10;
       }
 
-      $short_type = str_replace('_mode', '', $this->entityTypeId);
+      $short_type = str_replace(array('entity_', '_mode'), '', $this->entityTypeId);
       $table['#rows']['_add_new'][] = array(
         'data' => array(
           '#type' => 'link',

core/modules/entity/src/Tests/EntityDisplayModeTest.php

@@ -35,6 +35,7 @@ public function testEntityViewModeUI() {
     $this->assertResponse(200);
     $this->assertText(t('Add new view mode'));
     $this->assertLinkByHref('admin/structure/display-modes/view/add');
+    $this->assertLinkByHref('admin/structure/display-modes/view/add/entity_test');
 
     $this->drupalGet('admin/structure/display-modes/view/add/entity_test_mulrev');
     $this->assertResponse(404);