Issue #2188613 by Berdir, Xen, andypost: Rename EntityStorageController to EntityStorage.

core/includes/entity.inc

core/includes/menu.inc

core/lib/Drupal/Core/Config/ConfigImporter.php

core/lib/Drupal/Core/Config/ConfigInstaller.php

core/lib/Drupal/Core/Config/ConfigManager.php

core/lib/Drupal/Core/Config/DatabaseStorage.php

core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php

core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php

...rupal/Core/Config/Entity/ConfigEntityStorageInterface.php

core/lib/Drupal/Core/Config/Entity/ConfigEntityType.php

core/lib/Drupal/Core/Config/Entity/DraggableListBuilder.php

core/lib/Drupal/Core/Datetime/Date.php

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

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

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

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

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

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

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

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