Allow changing listening ip addresses (#1713)

* Allow changing listening ip address

* Use Json serialize for appsettings.config saving

* BOM

* IP Address validation

* ip address reset

* ValidIpAddress regex

API/Helpers/Converters/ServerSettingConverter.cs

@@ -30,6 +30,9 @@ public class ServerSettingConverter : ITypeConverter<IEnumerable<ServerSetting>,
                 case ServerSettingKey.Port:
                     destination.Port = int.Parse(row.Value);
                     break;
+                case ServerSettingKey.IpAddresses:
+                    destination.IpAddresses = row.Value;
+                    break;
                 case ServerSettingKey.AllowStatCollection:
                     destination.AllowStatCollection = bool.Parse(row.Value);
                     break;