Fix OAuth authorization redirect

app/assets/stylesheets/forms.scss

+code {
+  font-family: 'Roboto Mono', monospace;
+  font-weight: 400;
+}
+
 .form-container {
   max-width: 400px;
   padding: 20px;
@@ -85,18 +90,6 @@
     }
   }
 
-  code {
-    display: block;
-    font-family: 'Roboto Mono', monospace;
-    font-weight: 400;
-    font-size: 12px;
-    margin-top: 20px;
-    background: #282c37;
-    border-radius: 4px;
-    padding: 2px;
-    word-wrap: break-word;
-  }
-
   .actions {
     margin-top: 30px;
   }

app/controllers/oauth/authorizations_controller.rb

 class Oauth::AuthorizationsController < Doorkeeper::AuthorizationsController
+  skip_before_action :authenticate_resource_owner!
+
   before_action :store_current_location
+  before_action :authenticate_resource_owner!
 
   private
 

app/views/oauth/authorizations/show.html.haml

-%code= params[:code]
+.flash-message
+  %code= params[:code]