Qual: Uniformize code (ligne -> line)

dev/samples/create_invoice.php

htdocs/comm/propal/class/propal.class.php

htdocs/compta/facture/class/facture.class.php

htdocs/core/class/translate.class.php

...iggers/interface_modPropale_Exportsynchro.class.php-NORUN

htdocs/lib/datepicker.php

htdocs/theme/auguria/style.css.php

htdocs/theme/eldy/style.css.php

htdocs/theme/freelug/style.css.php

htdocs/theme/yellow/style.css.php