The mortgage market’s shift from a focus on refinances to purchase mortgages won’t be enough to prompt an increase in purchase-mortgage originations in 2014, according to industry economists. The Mortgage Bankers Association revised its origination projections last week, predicting that purchase-mortgage originations will decline by 4.0 percent in 2014 compared with the previous year. An estimated $680 billion in purchase mortgages ... [Includes one data chart]