Fix: If error on add line of type "product" when creating

proposal/order/invoice, do not show date of services.

htdocs/comm/propal.php

@@ -2000,7 +2000,7 @@ if ($action == 'create')
 		{
 			$var = true;
 
-			// Add free products/services
+			// Add products/services form
 			$object->formAddObjectLine(1, $mysoc, $soc);
 
 			$parameters = array();

htdocs/core/tpl/objectline_create.tpl.php

@@ -271,7 +271,7 @@ else {
 </tr>
 
 <?php
-if (! empty($conf->service->enabled) && $dateSelector)
+if (! empty($conf->service->enabled) && $dateSelector && GETPOST('type') != '0')
 {
 	if(! empty($conf->global->MAIN_VIEW_LINE_NUMBER)) $colspan = 10;
 	else $colspan = 9;