erge branch '3.1'

* 3.1:
  Remove trailing space
  CS fixes
  Remove trailing space
  CS: apply rules
  [Yaml] Clean some messages + add test case
  [Console] simplified code
  [Form] Fix UrlType transforms valid protocols
  [SecurityBundle] Changed encoder configuration example to bcrypt

Author: nicolas-grekas

Guard/GuardAuthenticatorInterface.php

@@ -39,7 +39,7 @@ interface GuardAuthenticatorInterface extends AuthenticationEntryPointInterface
      * Whatever value you return here will be passed to getUser() and checkCredentials()
      *
      * For example, for a form login, you might:
-     * 
+     *
      *      if ($request->request->has('_username')) {
      *          return array(
      *              'username' => $request->request->get('_username'),
@@ -87,7 +87,7 @@ public function getUser($credentials, UserProviderInterface $userProvider);
      *
      * @param mixed         $credentials
      * @param UserInterface $user
-     * 
+     *
      * @return bool
      *
      * @throws AuthenticationException