Small improvement

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

@@ -247,7 +247,7 @@ public class EntityOperation {
             Log.i("Queued sync folder=" + folder);
         }
 
-        if (foreground)
+        if (foreground) // Show spinner
             db.folder().setFolderSyncState(fid, "requested");
 
         if (account == null) // Outbox

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

@@ -260,7 +260,7 @@ public class FragmentFolder extends FragmentBase {
 
                         db.message().deleteMessagesBefore(id, keep_time);
 
-                        EntityOperation.sync(context, folder.id, false);
+                        EntityOperation.sync(context, folder.id, true);
                     }
 
                     db.setTransactionSuccessful();