clear activity queue

app/src/main/java/info/nightscout/androidaps/startupwizard/SetupWizardActivity.java

@@ -144,6 +144,7 @@ public class SetupWizardActivity extends AppCompatActivity {
     // Go back to overview
     public void finishSetupWizard(View view) {
         Intent intent = new Intent(this, MainActivity.class);
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
         startActivity(intent);
     }