Issue #2105065 by tim.plunkett, dawehner: Standards cleanup for null and other types in API docs

core/includes/install.inc

core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php

core/lib/Drupal/Core/Controller/TitleResolverInterface.php

core/lib/Drupal/Core/Entity/EntityAccessController.php

core/lib/Drupal/Core/HttpKernel.php

core/lib/Drupal/Core/Plugin/DefaultPluginManager.php

core/lib/Drupal/Core/Session/AccountInterface.php

core/modules/block/block.api.php

.../modules/edit/lib/Drupal/edit/EditorSelectorInterface.php

...rence/Plugin/entity_reference/selection/SelectionBase.php

.../modules/locale/lib/Drupal/locale/LocaleConfigManager.php

core/modules/locale/locale.module

.../serialization/EntityResolver/EntityResolverInterface.php

core/modules/system/entity.api.php

...iews/Plugin/entity_reference/selection/ViewsSelection.php

...b/Drupal/views/Plugin/views/display/DisplayPluginBase.php

core/modules/views/lib/Drupal/views/ViewExecutable.php