Merge branch '2.8' into 3.3

* 2.8: (22 commits)
  Tests and fix for issue in array model data in EntityType field with multiple=true
  [Form] Fixed PercentToLocalizedStringTransformer to accept both comma and dot as decimal separator, if possible
  removed useless PHPDoc
  [Form] Fix FormInterface::submit() annotation
  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.
  Added null as explicit return type (?TokenInterface)
  [FrameworkBundle] Fix Routing\DelegatingLoader
  Render all line breaks according to the exception message
  [Form] Fix phpdoc
  [DI] remove confusing code
  [Form] Fixed GroupSequence with "constraints" option
  [Validator] Clarify UUID validator behavior
  [Filesystem] Fixed makePathRelative
  ...

Author: nicolas-grekas

Client.php

@@ -45,8 +45,6 @@ abstract class Client
     private $isMainRequest = true;
 
     /**
-     * Constructor.
-     *
      * @param array     $server    The server parameters (equivalent of $_SERVER)
      * @param History   $history   A History instance to store the browser history
      * @param CookieJar $cookieJar A CookieJar instance to store the cookies

Request.php

@@ -12,8 +12,6 @@
 namespace Symfony\Component\BrowserKit;
 
 /**
- * Request object.
- *
  * @author Fabien Potencier <fabien@symfony.com>
  */
 class Request
@@ -27,8 +25,6 @@ class Request
     protected $content;
 
     /**
-     * Constructor.
-     *
      * @param string $uri        The request URI
      * @param string $method     The HTTP method request
      * @param array  $parameters The request parameters

Response.php

@@ -12,8 +12,6 @@
 namespace Symfony\Component\BrowserKit;
 
 /**
- * Response object.
- *
  * @author Fabien Potencier <fabien@symfony.com>
  */
 class Response
@@ -23,8 +21,6 @@ class Response
     protected $headers;
 
     /**
-     * Constructor.
-     *
      * The headers array is a set of key/value pairs. If a header is present multiple times
      * then the value is an array of all the values.
      *