New config version

ampel-firmware/web_config.cpp

@@ -23,7 +23,7 @@ namespace web_config {
 
   // -- Configuration specific key. The value should be modified if config structure was changed.
 
-  const char config_version[IOTWEBCONF_CONFIG_VERSION_LENGTH] = "a03";
+  const char config_version[IOTWEBCONF_CONFIG_VERSION_LENGTH] = "a04";
   using namespace iotwebconf;
 
   /**
@@ -97,7 +97,7 @@ namespace web_config {
 
   iotwebconf::ParameterGroup timeParams = iotwebconf::ParameterGroup("ntp", "Time server");
   iotwebconf::TextTParameter<STRING_LEN> ntpParam = iotwebconf::Builder<iotwebconf::TextTParameter< STRING_LEN>>(
-      "ntp_server").label("NTP Server").build();
+      "ntp_server").label("NTP Server").defaultValue(NTP_SERVER).build();
   iotwebconf::IntTParameter<int16_t> timeOffsetParam = iotwebconf::Builder<iotwebconf::IntTParameter<int16_t>>(
       "timezone").label("Timezone").defaultValue((UTC_OFFSET_IN_SECONDS) / 3600).min(-23).max(23).step(1).build();
   iotwebconf::CheckboxTParameter dstParam = iotwebconf::Builder<iotwebconf::CheckboxTParameter>("dst").label(