Fix relative links

_config.yml

@@ -49,7 +49,7 @@ nav_external_links:
   - title: Project statistics
     url: https://www.openhub.net/p/catrobat
   - title: Hour Of Code
-    url: https://developer.catrobat.org/pages/hour-of-code/
+    url: /hour-of-code/
 
 # Footer
 back_to_top: true

hour-of-code/index.html

@@ -9,6 +9,7 @@
 		<link rel="stylesheet" type="text/css" href="css/style.css">
     <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
 		<title>Heroes of the Universe Game Jam</title>
+    <link rel="icon" type="image/png" href="/assets/images/favicon.ico">
 		<meta charset="UTF-8">
 	</head>
 
@@ -64,7 +65,6 @@ <h2>Social Media</h2>
        <p>
          <a target="_blank" href="https://catrob.at/fb"><img src="img/social/facebook.png" class="social"></a>
          <a target="_blank" href="https://catrob.at/pctwitter"><img src="img/social/twitter.png" class="social"></a>
-         <a target="_blank" href="https://catrob.at/dpc"><img src="img/social/discord.png" class="social"></a></p>
         </br>
       </div>
       </div>
@@ -214,7 +214,7 @@ <h3>How can I promote this event in my community?</h3>
     </div>
     </div>
   </div>
-    <img src="{{ site.baseurl }}/img/penguin.png" class="picture-center">
+    <img src="img/penguin.png" class="picture-center">
     <div class="text">
     <div class="footer_social">
         <a target="_blank" href="https://catrob.at/fb"><img src="img/social/facebook.png" class="social"></a>