The tenant shall be current in the payment of rent including all utilities which the tenant has agreed in the rental agreement to pay before exercising any of the remedies accorded the tenant under the provisions of this chapter: PROVIDED, That this section shall not be construed as limiting the tenant's civil remedies for negligent or intentional damages: PROVIDED FURTHER, That this section shall not be construed as limiting the tenant's right in an unlawful detainer proceeding to raise the defense that there is no rent due and owing.