Use dummy ML model as default for preference.

- disable influxDB as default

eraser.starter/src/main/java/de/tudresden/inf/st/eraser/starter/DummyMachineLearningHandlerFactory.java

@@ -11,11 +11,11 @@ import java.net.URL;
  */
 public class DummyMachineLearningHandlerFactory extends MachineLearningHandlerFactory {
 
-  private DummyMachineLearningModel model;
+  private final DummyMachineLearningModel model = DummyMachineLearningModel.createDefault();
 
   @Override
   public void initializeFor(MachineLearningHandlerFactoryTarget target, URL configUrl) {
-    model = DummyMachineLearningModel.createDefault();
+    // not needed
   }
 
   @Override

eraser.starter/src/main/resources/starter.eraser

@@ -29,7 +29,8 @@ Group: id="Datetime" items=["datetime_month", "datetime_day", "datetime_hour", "
 Mqtt: incoming="oh2/out/" outgoing="oh2/in/" host="localhost:1883" ;
 //Mqtt: incoming="oh2/out/" outgoing="oh2/in/" host="192.168.1.250" ;
 
-Influx: host="172.22.1.152" ;
+//Influx: host="172.22.1.152" ;
+
 //"working", "walking", "dancing", "lying", "getting up", "reading"
 ML: activities={
   0: "working",

eraser.starter/starter-setting.yaml

@@ -43,7 +43,7 @@ preference:
   file: src/main/resources/loaded_learner_preferences_brightness_iris.json
   external: true
   # Use dummy model in which the current activity is directly editable. Default: false.
-  dummy: false
+  dummy: true
   # Model id. Default: 1.
   id: 1
   abortOnError: true