The inhabitants of said Town provided it constructs and keeps in good repair the roads, streets, alleys, sidewalks and gutters within the same, shall not be required to pay any district road taxes assessed by the County Court, or to perform any labor on the roads outside of the corporate limits of the Town; nor shall the inhabitants of said Town or while it provides for its own poor, be required to pay any poor levies assessed by the County Court for the support of the poor outside of said corporate limits; but beyond this the taxable property in said Town shall not be exempt from the payment of County levies for any purpose for which such levy may be lawfully laid, by reason of any provisions in its Charter or act of incorporation, or otherwise.