Merge pull request git#1950 from veit/DataScience-course

Add the course ‘Versioned and reproducible storage of code and data’

Author: dscho

layouts/shortcodes/external/courses.html

@@ -8,6 +8,12 @@ <h4><a href="https://www.packtpub.com/application-development/git-mastering-vers
       By Ferdinando Santacroce, Aske Olsson, Rasmus Voss and Jakub Narębski
     </p>
   </li>
+  <li>
+    <h4><a href="https://cusy.io/en/our-training-courses/versioned-and-reproducible-storage-of-code-and-data">Versioned and reproducible storage of code and data</a></h4>
+    <p class='description'>
+      In this course you will learn how to create reproducible research results and write source code efficiently together.
+    </p>
+  </li>
 </ul>
 </div>
 <div class='column-right'>