fix(back/flash): retrieve all flashed fields

src/components/SessionComponent.ts

@@ -62,13 +62,7 @@ export default class SessionComponent extends ApplicationComponent {
 
             // Views flash function
             res.setLazyLocal('flash', () => {
-                return {
+                return req.flash();
-                    info: req.flash('info'),
-                    success: req.flash('success'),
-                    warning: req.flash('warning'),
-                    error: req.flash('error'),
-                    'error-alert': req.flash('error-alert'),
-                };
             });
             next();
         });