Fix blank page/error when using hardware back button, add 404 page just in case

www/pages/404.html

@@ -0,0 +1,26 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<div class="page" data-name="404">
+
+    <div class="navbar">
+        <div class="navbar-bg"></div>
+        <div class="navbar-inner">
+            <div class="left">
+                <a href="/" class="link icon-only back hapticbtn">
+                    <i class="icon icon-back"></i>
+                </a>
+            </div>
+            <div class="title">Helena Express</div>
+        </div>
+    </div>
+
+    <div class="page-content">
+
+        <div class="block">
+            <p>This page doesn't exist. How did you get here? Please tell us, it might be a bug.
+        </div>
+
+    </div>
+
+</div>

www/routes.js

@@ -43,6 +43,7 @@ var routes = [
     {
         path: '/home',
         name: 'home',
+        alias: ["/"],
         on: {
             pageBeforeIn: function () {
                 // make sure it's not shown right after account setup
@@ -420,5 +421,10 @@ var routes = [
                 }
             }
         ]
+    },
+    {
+        path: '(.*)',
+        url: './pages/404.html',
+        name: '404'
     }
 ];