[FrameworkBundle] set the dispatcher in the console application

So events are really dispatched using the FrameworkBundle console application
Removed reference to Symfony\Component\Form\Extension\Core\Type\FormType in form.xml
merged branch Tobion/console-dispatcher (PR #8158)

This PR was merged into the 2.3 branch.

Discussion
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[FrameworkBundle] set the dispatcher in the console application

BC break: no
test pass: yes

Otherwise events are not dispatched in symfony frameworkbundle.
The first commit fixes a related typehint in the console.

Commits
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e93fc7a [FrameworkBundle] set the dispatcher in the console application
176a3d4 [Console] fix typehint for Application::setDispatcher
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)