Update changelog

assets/javascripts/news.json

@@ -1,5 +1,9 @@
 [
   [
+    "2017-02-26",
+    "Refreshed design.",
+    "Added <a href=\"/settings\">Preferences</a>."
+  ], [
     "2017-01-22",
     "New <a href=\"/http/\">HTTP</a> documentation (thanks Mozilla)"
   ], [