EVALUATION OF ANTIBACTERIAL ACTIVITY OF MACERATED OIL FROM Lemon Balm (Melissaofficinalis L, Lamiaceae), Thyme (Thymus vulgaris L, Lamiaceae), Mint (Menthalongifolia L, Lamiaceae) and Marigold (Calendula officinalis, Amaryllidaceae)WITH MODIFIED TUBE AGAR DILUTION METHOD AGAINST YERSINIA RUCKERI