merge branch '2.1' into 2.2

* 2.1:
  fixed doc references (closes #7515)
  small changes
  [SecurityBundle] Fixed configuration exemple
  idAsIndex should be true with a smallint or bigint id field.
  Fixed long multibyte parameter logging in DbalLogger:startQuery
  Keep the file extension in the temporary copy and test that it exists (closes #7482)
  [Validator][translation][japanese]replaced period to japanese one [Validator][translation][japanese]fixed japanese translation to more practical one [Validator][translation][japanese]fixed message ordering to be consistent with other languages [Validator][translation][japanese]added new validation messages in japanese translation

Conflicts:
	src/Symfony/Component/Validator/Resources/translations/validators.ja.xlf

Author: fabpot

README.md

@@ -14,7 +14,7 @@ https://github.com/fabpot/Silex/blob/master/src/Silex/Provider/FormServiceProvid
 
 Documentation:
 
-http://symfony.com/doc/2.0/book/forms.html
+http://symfony.com/doc/2.1/book/forms.html
 
 Resources
 ---------

Tests/Extension/Core/DataTransformer/DateTimeToRfc3339TransformerTest.php

@@ -117,6 +117,6 @@ public function testReverseTransformWithNonExistingDate()
     {
         $transformer = new DateTimeToRfc3339Transformer('UTC', 'UTC');
 
-        var_dump($transformer->reverseTransform('2010-04-31T04:05Z'));
+        $transformer->reverseTransform('2010-04-31T04:05Z');
     }
 }