Merge pull request #5398 from atm-geoffrey/fix_project_clone_extrafields

FIX extrafields cloned on project clone

htdocs/projet/class/project.class.php

@@ -1121,6 +1121,7 @@ class Project extends CommonObject
 
 		// Load source object
 		$clone_project->fetch($fromid);
+		$clone_project->fetch_optionals();
 		$clone_project->fetch_thirdparty();
 
 		$orign_dt_start=$clone_project->date_start;