Fix for ampersand on values (JS only)

lib/carto/tree/filterset.js

@@ -93,9 +93,9 @@ tree.Filterset.prototype.toJS = function(env) {
     }
     var attrs = "data";
     if (op === '=~') {
-      return "(" + attrs + "['" + filter.key.value  + "'] + '').match(" + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val) + ")";
+      return "(" + attrs + "['" + filter.key.value  + "'] + '').match(" + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'").replace(/&/g, '&') + "'" : val) + ")";
     }
-    return attrs + "['" + filter.key.value  + "'] " + op + " " + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'") + "'" : val);
+    return attrs + "['" + filter.key.value  + "'] " + op + " " + (val.is === 'string' ? "'" + val.toString().replace(/'/g, "\\'").replace(/&/g, '&') + "'" : val);
   }).join(' && ');
 };