PLT-3237 Update displayed config values in admin console after saving (#3506)

* Reloaded admin console data when settings are saved

* Fixed attempting to save an invalid config setting overwriting the stored config

webapp/components/admin_console/configuration_settings.jsx

@@ -19,17 +19,12 @@ export default class ConfigurationSettings extends AdminSettings {
         this.getConfigFromState = this.getConfigFromState.bind(this);
 
         this.renderSettings = this.renderSettings.bind(this);
-
-        this.state = Object.assign(this.state, {
-            listenAddress: props.config.ServiceSettings.ListenAddress,
-            webserverMode: props.config.ServiceSettings.WebserverMode
-        });
     }
 
     componentWillReceiveProps(nextProps) {
-        if (nextProps.config.ServiceSettings.ListenAddress !== this.props.config.ServiceSettings.ListenAddress) {
-            this.setState({listenAddress: nextProps.config.ServiceSettings.ListenAddress});
-        }
+        // special case for this page since we don't update AdminSettings components when the
+        // stored config changes, but we want this page to update when you reload the config
+        this.setState(this.getStateFromConfig(nextProps.config));
     }
 
     getConfigFromState(config) {
@@ -39,6 +34,13 @@ export default class ConfigurationSettings extends AdminSettings {
         return config;
     }
 
+    getStateFromConfig(config) {
+        return {
+            listenAddress: config.ServiceSettings.ListenAddress,
+            webserverMode: config.ServiceSettings.WebserverMode
+        };
+    }
+
     renderTitle() {
         return (
             <h3>