Subject at top for widget

app/src/main/java/eu/faircode/email/FragmentOptionsDisplay.java

@@ -229,6 +229,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
                 prefs.edit().putBoolean("subject_top", checked).apply();
+                WidgetUnified.update(getContext());
             }
         });