Additional GS3 sponsor logo

Author: jodygarnett

_includes/gs3-sponsors.html

@@ -122,6 +122,11 @@
        title="Region Västra Götaland"
        style="display:inline; margin-left:5px; margin-right:5px; min-width: 80px; max-width: 150px; max-height: 80px;"/> 
 </a>
+<a href="https://waldexpert.waldportal-bw.de/">
+  <img src="/sponsor/img/waldexpert-logo.svg"
+       title="WaldExpert"
+       style="display:inline; margin-left:5px; margin-right:5px; min-width: 80px; max-width: 150px; max-height: 80px;"/> 
+</a>
 <p>
   Individual donations: Abhijit Gujar, Stefan Overkamp.
 </p>