[Validator] added missing estonian translation of messages
Removed trailing whitespace
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