Improving formatter function

client/scripts/application.js

@@ -185,8 +185,10 @@
                     switch (delta) {
                         case 0:
                             return 'Most recent query';
+                        case 1:
+                            return 'Previous query';
                         default:
-                            return String(delta) + ' querie(s) back';
+                            return String(delta) + ' queries back';
                     }
                 }
             });