Filter duplicates by default

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

@@ -588,7 +588,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
         String sort = prefs.getString("sort", "time");
         boolean ascending = prefs.getBoolean(
                 viewType == AdapterMessage.ViewType.THREAD ? "ascending_thread" : "ascending_list", false);
-        boolean filter_duplicates = prefs.getBoolean("filter_duplicates", false);
+        boolean filter_duplicates = prefs.getBoolean("filter_duplicates", true);
 
         adapter = new AdapterMessage(this, type, viewType, compact, zoom, sort, ascending, filter_duplicates, iProperties);
         rvMessage.setAdapter(adapter);
@@ -2494,7 +2494,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
         boolean filter_seen = prefs.getBoolean("filter_seen", false);
         boolean filter_unflagged = prefs.getBoolean("filter_unflagged", false);
         boolean filter_snoozed = prefs.getBoolean("filter_snoozed", true);
-        boolean filter_duplicates = prefs.getBoolean("filter_duplicates", false);
+        boolean filter_duplicates = prefs.getBoolean("filter_duplicates", true);
         boolean compact = prefs.getBoolean("compact", false);
         boolean experiments = prefs.getBoolean("experiments", false);