add privacy policy link to home page (#1745)

src/Site/views/languageforge/theme/default/page/home/index.html.twig

@@ -125,7 +125,7 @@
 
         <ul class="copyright">
             <li>Copyright <span class="notranslate">{{ "now"|date("Y") }}</span> <a href="http://www.sil.org">SIL International</a>. Use of this site is
-                governed by our <a href="/terms_and_conditions">terms and conditions</a>.
+                governed by our <a href="/terms_and_conditions">terms and conditions</a> and our <a href="https://software.sil.org/language-software-privacy-policy/">privacy policy</a>.
             </li>
             <li>Design: <a href="http://html5up.net">HTML5 UP</a></li>
         </ul>