Fix Webdav to set source on read-write permission

WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Code/EnterpriseStorage/EnterpriseStorageController.cs

@@ -895,6 +895,7 @@ namespace WebsitePanel.EnterpriseServer
                 {
                     rule.Write = true;
                     rule.Read = true;
+                    rule.Source = true;
                 }
 
                 rule.Pathes.Add("*");