Added tutorial slides

Author: marshka

_tutorials/graph-based-processing/ecml-2023.html

@@ -51,7 +51,7 @@
             <div class="col-lg-8 text-center">
                 <h1>Material</h1>
                 <p>Download the slides used in our tutorial.</p>
-                <a class="btn btn-primary" href="./gdl4sts_handout.pdf" role="button">Download slides</a>
+                <a class="btn btn-primary" href="./pdf/2023_gdl4sts_ecml_handout.pdf" role="button">Download slides</a>
             </div>
         </div>
     </div>

_tutorials/graph-based-processing/log-2024.html

@@ -53,11 +53,14 @@
                 <h1>Material</h1>
                 <p>Download the slides used in our tutorial.</p>
                 <div class="row g-4 justify-content-center">
-                    <div class="col-md-6">
-                        <a class="w-75 btn btn-primary" href="#" role="button">Download slides (Conf.)</a>
+                    <div class="col-md-4">
+                        <a class="w-75 btn btn-primary" href="./pdf/2024_gdl4tsp_log_handout.pdf" role="button" target="_blank">Download slides (Conf.)</a>
                     </div>
-                    <div class="col-md-6">
-                        <a class="w-75 btn btn-primary" href="#" role="button">Download slides (Meetup)</a>
+                    <div class="col-md-4">
+                        <a class="w-75 btn btn-primary" href="#" role="button" target="_blank">Download slides (Meetup)</a>
+                    </div>
+                    <div class="col-md-4">
+                        <a class="w-75 btn btn-warning" href="https://colab.research.google.com/drive/1F510uMFU1_j86R7u873lqZ4u3Oa-qC_L?usp=sharing" role="button" target="_blank">Code demo</a>
                     </div>
                 </div>
             </div>