Show most recent 10 new message notifications

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

@@ -131,7 +131,7 @@ import static androidx.core.app.NotificationCompat.DEFAULT_SOUND;
 import static javax.mail.Folder.READ_WRITE;
 
 class Core {
-    private static final int MAX_NOTIFICATION_COUNT = 25; // per group
+    private static final int MAX_NOTIFICATION_COUNT = 10; // per group
     private static final long AFTER_SEND_DELAY = 20 * 1000L; // milliseconds
     private static final int SYNC_CHUNCK_SIZE = 200;
     private static final int SYNC_BATCH_SIZE = 20;

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

@@ -476,7 +476,7 @@ public interface DaoMessage {
             " AND folder.notify" +
             " AND (account.created IS NULL OR message.received > account.created OR message.sent > account.created)" +
             " AND (notifying <> 0 OR NOT (message.ui_seen OR message.ui_hide))" +
-            " ORDER BY message.received")
+            " ORDER BY message.received DESC")
     LiveData<List<TupleMessageEx>> liveUnseenNotify();
 
     @Transaction