add link to version archive

app.css

@@ -110,7 +110,7 @@ h1, h2, h3, h4, h5, h6 {
   color: #f9a62b;
 }
 
-.firmwareTableLink, .notRecommendedLink, .InfoLink {
+.firmwareTableLink, .notRecommendedLink, .InfoLink, .oldVersionLink {
   clear: right;
   float:right;
   color: #337ab7;

index.html

@@ -20,6 +20,7 @@
         <div id="model-pane" class="pane">
           <span class="notRecommendedLink">Veraltete Geräte anzeigen</span>
           <span class="firmwareTableLink">Tabelle anzeigen</span>
+          <a href="/gluon/archive/" class="oldVersionLink">Alte Versionen</a>
           <h1>Schritt 1: Wähle Dein Routermodell</h1>
           <div class="warning-notrecommended">
             <p>