/** The key of the message: days */
    public static final String LABELS_DAY = "{labels.day}";

    /** The key of the message: Update */
    public static final String LABELS_crawl_button_update = "{labels.crawl_button_update}";

    /** The key of the message: None */
    public static final String LABELS_NONE = "{labels.none}";

    /** The key of the message: Concurrent Crawler Config */