Made 'Taddeus Kroes' a clickable link

src/frontend/tpl/editor.html

@@ -63,7 +63,8 @@
             <div class="row">
                 <div class="span12 credits">
                     Idea and feedback by <a href="http://homepages.cwi.nl/~apt/" target="_blank">Krzysztof R. Apt</a>,
-                    implementation by Tadde&uuml;s Kroes and <a href="http://smvv.kompiler.org" target="_blank">Sander van Veen</a>.
+                    implementation by <a href="https://github.com/taddeus" target="_blank">Tadde&uuml;s Kroes</a>
+                    and <a href="http://smvv.kompiler.org" target="_blank">Sander van Veen</a>.
                 </div>
             </div>
         </div>