Merge pull request #447 from symfony-fr/2.3

Merging 2.3 to 2.4
Merge pull request #448 from symfony-fr/2.4

Merging 2.4
Fixed index of cookbook
Added translation for namespace twig path
Added link to the render_without_controller page
Correction d'une faute d'orthographe.
[cookbook] Added simulation authentication in tests
Added translation of testing with a database
Fixed typo
Removed forgotten english sentence
Merge branch 'saro0h-cookbook-templating' into 2.3
Merge branch 'johndodev-patch-1' into 2.3
merging conflict
Merge branch 'saro0h-cookbook-testing-database' into 2.3