Installation de l'export PDF

Signed-off-by: Fabien Crassat <fabien@crassat.com>
Suggest the snappy bundle for packagist

Signed-off-by: Fabien Crassat <fabien@crassat.com>
change view for pdf

Signed-off-by: Fabien Crassat <fabien@crassat.com>
Add PDF button to export

Signed-off-by: Fabien Crassat <fabien@crassat.com>
Protect the suggest Snapppy bundle is non-existent

Signed-off-by: Fabien Crassat <fabien@crassat.com>
Documentation

Signed-off-by: Fabien Crassat <fabien@crassat.com>
Protect the service if non existent

Signed-off-by: Fabien Crassat <fabien@crassat.com>
test unit

Signed-off-by: Fabien Crassat <fabien@crassat.com>