indicate if the reload was successful

src/PlugIn.cpp

@@ -183,6 +183,8 @@ void PlugIn::validateBackendData() {
     for (const auto& airport : std::as_const(airports))
         this->m_updateQueue.insert({ airport, {} });
     this->m_compatible = true;
+
+    this->DisplayUserMessage(PLUGIN_NAME, "INFO", "Reloaded AMAN-configuration", true, true, false, false, false);
 }
 
 EuroScopePlugIn::CRadarScreen* PlugIn::OnRadarScreenCreated(const char* displayName, bool needsRadarContent, bool geoReferenced,