Merge branch '3.4'

* 3.4: (33 commits)
  Remove remaining `@experimental` annotations
  Tests and fix for issue in array model data in EntityType field with multiple=true
  [Validator] Add unique entity violation cause
  [Lock] Automaticaly release lock when user forget it
  [Form] Fixed PercentToLocalizedStringTransformer to accept both comma and dot as decimal separator, if possible
  fixed CS
  [FrameworkBundle] Don't clear app pools on cache:clear
  Hide label button when its setted to false
  removed useless PHPDoc
  [HttpFoundation] Return instance in StreamedResponse
  [Form] Fix FormInterface::submit() annotation
  [PHPUnitBridge] don't remove when set to  empty string
  PdoSessionHandler: fix advisory lock for pgsql when session.sid_bits_per_character > 4
  HttpCache does not consider ESI resources in HEAD requests
  Fix translation for "This field was not expected"
  [Routing] Enhance Route(Collection) docblocks
  Added improvement for accuracy in MoneyToLocalizedStringTransformer.
  Removed unused private property
  Use correct verb form in the pull request template
  Use PHP_MAXPATHLEN in Filesystem.
  ...

Author: nicolas-grekas

IdentityTranslator.php

@@ -22,8 +22,6 @@ class IdentityTranslator implements TranslatorInterface
     private $locale;
 
     /**
-     * Constructor.
-     *
      * @param MessageSelector|null $selector The message selector for pluralization
      */
     public function __construct(MessageSelector $selector = null)

MessageCatalogue.php

@@ -15,8 +15,6 @@
 use Symfony\Component\Translation\Exception\LogicException;
 
 /**
- * MessageCatalogue.
- *
  * @author Fabien Potencier <fabien@symfony.com>
  */
 class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterface
@@ -29,8 +27,6 @@ class MessageCatalogue implements MessageCatalogueInterface, MetadataAwareInterf
     private $parent;
 
     /**
-     * Constructor.
-     *
      * @param string $locale   The locale
      * @param array  $messages An array of messages classified by domain
      */

Translator.php

@@ -24,8 +24,6 @@
 use Symfony\Component\Translation\Formatter\MessageFormatter;
 
 /**
- * Translator.
- *
  * @author Fabien Potencier <fabien@symfony.com>
  */
 class Translator implements TranslatorInterface, TranslatorBagInterface
@@ -76,8 +74,6 @@ class Translator implements TranslatorInterface, TranslatorBagInterface
     private $configCacheFactory;
 
     /**
-     * Constructor.
-     *
      * @param string                         $locale    The locale
      * @param MessageFormatterInterface|null $formatter The message formatter
      * @param string|null                    $cacheDir  The directory to use for the cache