adding french language in navbar

Author: Thierry Poinot

assets/templates/navbar.html

@@ -26,6 +26,7 @@
           <li role="presentation"><a role="menuitem" tabindex="-1" href="" data-ng-click="changeLanguage('en')">{{"english" | translate}}</a></li>
           <li role="presentation"><a role="menuitem" tabindex="-1" href="" data-ng-click="changeLanguage('es')">{{"spanish" | translate}}</a></li>
           <li role="presentation"><a role="menuitem" tabindex="-1" href="" data-ng-click="changeLanguage('pt')">{{"portuguese" | translate}}</a></li>
+          <li role="presentation"><a role="menuitem" tabindex="-1" href="" data-ng-click="changeLanguage('fr')">{{"french" | translate}}</a></li>
         </ul>
 
         <button class="btn btn-danger btn-sm" data-ng-click="$parent.setTemplate('main-icons.html')" data-ng-show="$parent.viewTemplate !== 'main-icons.html'" title="{{'icons' | translate}}">