sourcemaps fix + interpolation distributive

Author: dhilt

dist/ui-scroll-grid.js

@@ -183,8 +183,7 @@ angular.module('ui.scroll.grid', [])
           return; // throw an error?
         }
 
-        let mapTo = selected.mapTo,
-          next = null;
+        let mapTo = selected.mapTo, next = null;
         index -= mapTo < index ? 1 : 0;
 
         columns.forEach(c => {

dist/ui-scroll-grid.js.map

@@ -37,6 +37,7 @@ module.exports.config = {
 
 module.exports.compressedPlugins = [
   new webpack.optimize.UglifyJsPlugin({
+    sourceMap: true,
     compress: {
       warnings: true,
     },