Rename contest on index page

templates/index.hbs

@@ -88,10 +88,10 @@
           </a>
         </div>
         <div class="column is-4 is-offset-0">
-          <a href="https://wettbewerb.jwinf.de/contents/4210%252F4205%252F4208?sell=2">
+          <a href="/contest/1">
             <div class="notification" style="background-color:#e5f0f8">
               <h3 class="title is-4">Jugendwettbewerb Informatik</h3>
-              <h4 class="subtitle is-5">JwInf 2018 Runde 1</h4>
+              <h4 class="subtitle is-5">Probewettbewerb</h4>
               <img src="/static/images/white.png" style="width:50%; margin:25px 25%">
               Zu den Wettbewerbsaufgaben …
             </div>