Adding NSF ack as special template

Author: Kevin Paul

portal/_templates/footer-nsf.html

@@ -0,0 +1,14 @@
+  <div class="container-fluid footer-extra">
+    <div class="container">
+      <div class="row">
+        <p class="m-0">
+          <img src="{{ pathto('_static/images/logos/footer-logo-nsf.png', 1) }}" style="float:left;width:60px;height:60px;margin-right:1rem;">
+          This material is based upon work supported by the National
+          Science Foundation under Grant Nos. 2026863 and 2026899. Any
+          opinions, findings, and conclusions or recommendations expressed
+          in this material are those of the author(s) and do not necessarily
+          reflect the views of the National Science Foundation.
+        </p>
+      </div>
+    </div>
+  </div>