translate with supervisor.lang update

sails/src/assets/scripts/modules/translate/controllers/translate.js

@@ -10,5 +10,15 @@ dashboardControllers.controller('TranslateController', function($translate, $sco
 
     // Reload captcha according to language (only once instance per page, so id is always 0)
     vcRecaptchaService.useLang(0, langKey.substr(0,2));
+
+    if ($window.sessionStorage.user) {
+      $http.put(config.backend + '/sup/' + supervisor.id, {lang: langKey})
+      .success(function (data) {
+        ngToast.success({ content: $translate.instant('data_saved') });
+      })
+      .error(function () {
+        ngToast.danger({ content: $translate.instant('data_no_saved') });
+      });
+    }
   };
 });