Local Government Salaries and Benefits ; Revises requirements for board of county commissioners salary formula to apply to noncharter counties; provides for determination of salaries of members of boards of county commissioners of certain counties; requires referendum for board of county commissioners to increase salary, retirement benefits, or other compensation paid to its members; requires referendum election costs to be paid by county; requires referendum for governing body of municipality to increase salary, retirement benefits, or other compensation paid to its members; requires referendum election costs to be paid by municipality; requires referendum for governing body of special district to increase salary, retirement benefits, or other compensation paid to its members; requires referendum election costs to be paid by special district.