ErrorHandler and fixes
Merge branch '2.3'

* 2.3:
  ErrorHandler and fixes
  fixed typo in CS translation (closes #8069)
  fix arab translation
  Removed reference to Symfony\Component\Form\Extension\Core\Type\FormType in form.xml
  slovenian validator translations updated
  [FrameworkBundle] set the dispatcher in the console application
  [Console] fix typehint for Application::setDispatcher
  [Finder] Fixed a path in a test.
  [Form] [Validator] Fixed post_max_size = 0 bug (Issue #8065)