Adds dependency for display in notifications

Fixes #3982
Closes #3986

// FREEBIE

res/xml/preferences_notifications.xml

@@ -52,6 +52,7 @@
 
     <ListPreference android:key="pref_notification_privacy"
                     android:title="@string/preferences_notifications__display_in_notifications"
+                    android:dependency="pref_key_enable_notifications"
                     android:defaultValue="all"
                     android:entries="@array/pref_notification_privacy_entries"
                     android:entryValues="@array/pref_notification_privacy_values"/>