re-enable account signup

app/controllers/welcome.js

@@ -31,8 +31,11 @@ export default class WelcomeController extends SiteController {
       return next();
     });
     
+    if (process.env.DTP_MEMBER_SIGNUP === 'enabled') {
       router.post('/signup', this.postSignup.bind(this));
       router.get('/signup-complete', this.getSignupComplete.bind(this));
+      router.get('/signup', this.getSignup.bind(this));
+    }
 
     router.get('/login', this.getLogin.bind(this));