Carson City’s Board of Supervisors voted Thursday to buy a downtown office building and extended into 2014 the chance to help Carson Mall secure a major tenant.Supervisors also reviewed the work of City Manager Larry Werner, praising him and setting Feb. 28 as the date to set goals for him to reach before his next performance evaluation in a year. Mayor Robert Crowell said Werner was to be commended, but warned things won’t get easier.“It’s been a pleasure,” said Werner, then moved on moments later to explain his recommended purchase, for more than $1.1 million, of the Business Resource Innovation …