Using hidden constant to use the feature

MARGININFO_HIDE_SHOW = 0 feature not used
MARGININFO_HIDE_SHOW = 1 feature used, displayed on open
MARGININFO_HIDE_SHOW = 2 feature used, not displayed on open

htdocs/core/class/commonobject.class.php

@@ -3235,7 +3235,11 @@ abstract class CommonObject
         $rounding = min($conf->global->MAIN_MAX_DECIMALS_UNIT, $conf->global->MAIN_MAX_DECIMALS_TOT);
 
 		$marginInfo = $this->getMarginInfos($force_price);
+		if ($conf->global->MARGININFO_HIDE_SHOW > 0)
 			print "<img onclick=\"$('.margininfos').toggle();\" src='".img_picto($langs->trans("Hide")."/".$langs->trans("Show"),'object_margin.png','','',1)."'>";
+		if ($conf->global->MARGININFO_HIDE_SHOW == 2) // hide by default
+			print '<script>$(document).ready(function() {$(".margininfos").hide();});</script>';
+			
 		print '<table class="nobordernopadding margintable" width="100%">';
 		print '<tr class="liste_titre">';
 		print '<td width="30%">'.$langs->trans('Margins').'</td>';