Secure _target=blank links with rel='noopener noreferrer'

app/base/templates/site_template/footer.html

@@ -4,13 +4,16 @@
         <div class="container-fluid">
           <ul class="nav">
             <li class="nav-item">
-              <a href="https://appseed.us/admin-dashboards/flask-dashboard-black" class="nav-link">
+              <a target="_blank" rel="noopener noreferrer"
+                 href="https://appseed.us/admin-dashboards/flask-dashboard-black" class="nav-link">
                 Flask Dashboard Black
               </a>
             </li>
           </ul>
           <div class="copyright">
-            &copy; <a href="https://www.creative-tim.com/">Creative-Tim</a> - Coded in Flask by AppSeed
+            &copy; <a target="_blank" rel="sponsored noopener noreferrer" 
+                      href="https://www.creative-tim.com/?AFFILIATE=128200">Creative-Tim</a> 
+            - coded by <a target="_blank" rel="noopener noreferrer" href="https://appseed.us">AppSeed</a>
           </div>
         </div>
       </footer>