Qual Uniformize grph generation code

htdocs/compta/bank/graph.php

htdocs/core/dolgraph.class.php

htdocs/langs/en_US/errors.lang

htdocs/langs/fr_FR/errors.lang

htdocs/product/stats/fiche.php

htdocs/product/stock/fiche-valo.php

htdocs/product/stock/valo.php

htdocs/viewimage.php

scripts/banque/graph-solde.php

scripts/cron/facture-paye-stats.php

scripts/cron/fournisseur-calcul-ca_genere.php

scripts/cron/fournisseur-graph.php

scripts/cron/product-graph.php

scripts/cron/stock-graph.php