[WIP] Removed deprecated things

This PR also add some comment docblocks.

Guys using PHPStorm or another IDE, please do not hesitate to feedback :) .

Still WIP because:

* docblocks are missing
* php csf should be launch on knpmenu
Having the final EOL is a good practice. But it was already there. your files now ends with 2 EOL, which means you have an empty line for nothing.