removed extraneous whitespaces
Fixed NativeSessionStorage:regenerate when does not exists
Merge branch '2.2' into 2.3

* 2.2:
  fixed typo
  bumped Symfony version to 2.2.5
  updated VERSION for 2.2.4
  update CONTRIBUTORS for 2.2.4
  updated CHANGELOG for 2.2.4
  Fixed NativeSessionStorage:regenerate when does not exists
  removed extraneous whitespaces

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php
Merge branch '2.3'

* 2.3:
  [PropertyAccess] added moves to pluralMap
  [Security] fixed issue where authentication listeners clear unrelated tokens
  added greek translation
  [DependencyInjection] Add exception for service name not dumpable in PHP
  bumped Symfony version to 2.3.3-DEV
  fix issue #8499 modelChoiceList call getPrimaryKey on a non object
  updated VERSION for 2.3.2
  updated CHANGELOG for 2.3.2
  [DependencyInjection] Add exception for service name not dumpable in PHP
  fixed typo
  bumped Symfony version to 2.2.5
  updated VERSION for 2.2.4
  update CONTRIBUTORS for 2.2.4
  updated CHANGELOG for 2.2.4
  Fixed NativeSessionStorage:regenerate when does not exists
  removed extraneous whitespaces

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php