feat(rest.php): Add visual difference for monovalued or multivalued attribute

Add visual difference for monovalued or multivalued attribute

webservice/html/rest.php

@@ -579,7 +579,12 @@ class fdRestService extends fdRPCService
       $attributes = [];
       foreach ($section['attrs'] as $attr) {
         if ($object->attrIsReadable($attr)) {
-          $attributes[] = $attr->getLdapName();
+          // Add "" for monovalued attribute or [] for multivalued (only if the class used is SetAttribute)
+          if (get_class($attr) == "SetAttribute") {
+            $attributes[$attr->getLdapName()] = [];
+          } else {
+            $attributes[$attr->getLdapName()] = "";
+          }
         }
       }
       $section['attrs'] = $attributes;