YH4F add stickers to spreadtheword page (#3505)

Thanks to @dario 's work!

Reviewed-on: #3505

contribute/spreadtheword.en.xhtml

@@ -28,6 +28,7 @@
         <li><a href="#nocloud">"There is no cloud ..." - campaign</a></li>
         <li><a href="#device-neutrality">Device Neutrality</a></li>
         <li><a href="#fedigov">Fedigov</a></li>
+        <li><a href="#yh4f">Youth Hacking 4 Freedom</a></li>
       </ul>
       <p>Behind the scenes</p>
       <ul>
@@ -202,6 +203,9 @@
 
     <h2 id="fedigov" class="left break">Fedigov</h2>
     <dynamic-content type="fedigov"/>
+    
+    <h2 id="yh4f" class="left break">yh4f</h2>
+    <dynamic-content type="yh4f"/>
     <!-- END ITEMIZE -->