Merge pull request #441 from symfony-fr/2.3

Merging 2.3 to 2.4
Merge pull request #442 from symfony-fr/2.4

Merging 2.4
Fixed typo on parameters DI component doc
Added translations and fixed some typos
Fixed typo and added a small translation
Added translation on cookbook console doc about sending mail
Added translation of the cookbook how to log in console
Merge branch 'saro0h-book-DI' into 2.3
Merge branch 'saro0h-book-cache' into 2.3
Merge branch 'saro0h-cookbook-console-sending-mail' into 2.3