add an option to navigate to the next unread category/feed when marking all as read (#1807)

commafeed-server/src/main/java/com/commafeed/backend/model/UserSettings.java

@@ -93,6 +93,7 @@ public class UserSettings extends AbstractModel {
 	private String primaryColor;
 
 	private boolean markAllAsReadConfirmation;
+	private boolean markAllAsReadNavigateToNextUnread;
 	private boolean customContextMenu;
 	private boolean mobileFooter;
 	private boolean unreadCountTitle;