[CS Fix] Consistent coding-style of concatenation operator usage
Filesystem::touch() not working with different owners (utime/atime issue)
Mitigate dependency upon ConfigCache
Merge branch '2.1' into 2.2

* 2.1:
  Removed trailing whitespace
  [Validator] added missing estonian translation of messages
  Filesystem::touch() not working with different owners (utime/atime issue)

Conflicts:
	src/Symfony/Component/Validator/Resources/translations/validators.et.xlf
Merge branch '2.2'

* 2.2:
  [Validator] added missing estonian translation of messages
  Removed trailing whitespace
  [Validator] added missing estonian translation of messages
  Filesystem::touch() not working with different owners (utime/atime issue)
Merge remote-tracking branch 'symfony/master' into develop

Conflicts:
	CHANGELOG.md
	src/main/php/ehough/filesystem/Filesystem.php