French translation added.

Author: JD-RD

client/components/Nav.jsx

@@ -599,6 +599,16 @@ class Nav extends React.PureComponent {
                 Español
               </button>
             </li>
+            <li className="nav__dropdown-item">
+              <button
+                onFocus={this.handleFocusForLang}
+                onBlur={this.handleBlur}
+                value="fr-CA"
+                onClick={e => this.handleLangSelection(e)}
+              >
+                Français
+              </button>
+            </li>
             <li className="nav__dropdown-item">
               <button
                 onFocus={this.handleFocusForLang}

client/i18n.js

@@ -2,16 +2,17 @@ import i18n from 'i18next';
 import { initReactI18next } from 'react-i18next';
 import LanguageDetector from 'i18next-browser-languagedetector';
 import Backend from 'i18next-http-backend';
-import { enUS, es, ja } from 'date-fns/locale';
+import { enUS, es, ja, frCA } from 'date-fns/locale';
 
 const fallbackLng = ['en-US'];
-const availableLanguages = ['en-US', 'es-419', 'ja'];
+const availableLanguages = ['en-US', 'es-419', 'ja', 'fr-CA'];
 
 export function languageKeyToLabel(lang) {
   const languageMap = {
     'en-US': 'English',
     'es-419': 'Español',
-    'ja': '日本語'
+    'ja': '日本語',
+    'fr-CA': 'French'
   };
   return languageMap[lang];
 }
@@ -20,7 +21,8 @@ export function languageKeyToDateLocale(lang) {
   const languageMap = {
     'en-US': enUS,
     'es-419': es,
-    'ja': ja
+    'ja': ja,
+    'fr-CA': frCA
   };
   return languageMap[lang];
 }