[#869] Fix 'changes' test

Mocks the date to 2016 to ensure test consistency with fixtures.

package.json

@@ -88,6 +88,7 @@
     "react-addons-test-utils": "^15.3.0",
     "rewire": "^2.5.2",
     "supertest": "^2.0.0",
+    "timekeeper": "^1.0.0",
     "zombie": "^4.1.0"
   },
   "engines": {

tests/app.js

@@ -4,13 +4,24 @@ var _ = require('lodash');
 var assert = require('chai').assert;
 var testUtils = require('./utils');
 var marked = require('marked');
+var tk = require('timekeeper');
 
 var entryFixtures = require('../fixtures/entry');
 var datasetFixtures = require('../fixtures/dataset');
 var userFixtures = require('../fixtures/user');
 var questionSetFixtures = require('../fixtures/questionset');
 
 describe('Basics', function() {
+  before(function() {
+    // Mock date to 2016 for consistent testing
+    tk.freeze(new Date(2016, 11, 30));
+  });
+
+  after(function() {
+    // Reset date mock
+    tk.reset();
+  });
+
   before(testUtils.startApplication);
   after(testUtils.shutdownApplication);
 
@@ -95,8 +106,8 @@ describe('Basics', function() {
           this.browser.visit('/', () => {
             assert.ok(this.browser.success);
             var html = this.browser.html();
-            _.forEach(['custom_css', 'navbar_logo',
-                       'custom_footer', 'support_url'],
+            _.forEach(
+              ['custom_css', 'navbar_logo', 'custom_footer', 'support_url'],
               settingName => {
                 var textToCheck = site.settings[settingName];
                 assert.include(html, textToCheck);