Add widget survey

Author: cansavvy

assets/footer.html

@@ -1,9 +1,17 @@
+
 <hr>
-<center> 
+<center>
+<div class="container">
+  <iframe class="responsive-iframe" src="https://c-savonen.shinyapps.io/widget-survey/?course_name=ai_programming" style="width: 400px; height: 220px; overflow: auto;"></iframe>
+</div>
+  </div>
+</center>
+
+<hr>
+<center>
   <div class="footer">
       All illustrations <a href="https://creativecommons.org/licenses/by/4.0/">CC-BY. </a>
-      <br>
       All other materials <a href= "https://creativecommons.org/licenses/by/4.0/"> CC-BY </a> unless noted otherwise.
       <a href="https://hutchdatascience.org/" target="_blank"><img src="https://hutchdatascience.org/images/crazy-idea-wide.png" style="width: 80%; padding-left: 15px; padding-top: 8px;"</a>
   </div>
-</center>
+</center>