upgrade devise simply stored

app/views/layouts/phone.html.slim

@@ -4,7 +4,7 @@ html lang="en"
     meta charset="utf-8"
     meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1"
     meta name="viewport" content="width=device-width, initial-scale=1.0"
-    title= content_for?(:title) ? yield(:title) : "Qrammer"
+    title= content_for?(:title) ? yield(:title) : application_title
     = csrf_meta_tags
 
     /! Le HTML5 shim, for IE6-8 support of HTML elements
@@ -28,7 +28,7 @@ html lang="en"
             span.icon-bar
             span.icon-bar
             span.icon-bar
-          a.brand href=user_root_path Qrammer
+          a.brand href=user_root_path = application_title
           .container.nav-collapse
             ul.nav#top-navigation-list
               - if list_open?