fixes: browser unsupported and page not found

views/errors/404.html

@@ -1,4 +1,7 @@
-<h2 class="text-center">404</h2>
+<div class="text-center logo-setup">
+  <img src="../img/logo-negative-beta.svg" alt="Copay">
+</div>
+<h1 class="text-center text-white">404</h1>
 <h3 class="text-center">Page not found</h3>
 <p class="text-center"><a href="/">go back...</a></p>
 

views/settings.html

@@ -63,7 +63,7 @@
           </fieldset>
 
           <div class="text-right">
-            <a class="back-button text-white m20r" href="/" ng-hide="$root.wallet">&laquo; Back</a>
+            <a class="back-button text-white m20r" href="/">&laquo; Back</a>
             <button type="submit" class="button primary m0 ng-binding" ng-disabled="setupForm.$invalid || loading" disabled="disabled" ng-click="save()">
               Save
             </button>

views/unsupported.html

@@ -1,4 +1,7 @@
-<h2 class="text-center">Browser unsupported</h2>
+<div class="text-center logo-setup">
+  <img src="../img/logo-negative-beta.svg" alt="Copay">
+</div>
+<h1 class="text-center text-white">Browser unsupported</h1>
 <h3 class="text-center">
   Copay uses webRTC for peer-to-peer communications,
   but your browser does not support it.
@@ -9,5 +12,3 @@
   For more information
   on supported browsers please check <a href="http://www.webrtc.org/">http://www.webrtc.org/</a>
 </h3>
-
-