Merge pull request #465 from symfony-fr/2.4

Merging 2.4
Merge pull request #467 from symfony-fr/2.4

2.4
Merge branch '2.4'
Merge branch 'master' of https://github.com/symfony-fr/symfony-docs-fr
Merge branch '2.4'
Merge branch '2.4'
Merge pull request #475 from symfony-fr/2.4

Merging 2.4
Merge branch '2.4'
Fixed example
Update index.rst
Update index.rst
Une phrase était restée en anglais.
Update event_listener.rst
Update generate_bundle.rst for fix --structure cmd
Added Security component translation
Fix exclude example by replacing [] by {}
Fixed typos
Update doc (validation and form)

Replace $form->bind($request);
Merge branch 'NAYZO-patch-1' into 2.3
Merging #478