Update widget on option changes

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

@@ -748,6 +748,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
                 prefs.edit().putBoolean("prefer_contact", checked).apply();
+                WidgetUnified.updateData(getContext());
             }
         });
 
@@ -755,6 +756,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
                 prefs.edit().putBoolean("only_contact", checked).apply();
+                WidgetUnified.updateData(getContext());
             }
         });
 
@@ -762,6 +764,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
                 prefs.edit().putBoolean("distinguish_contacts", checked).apply();
+                WidgetUnified.updateData(getContext());
             }
         });