update devise timeout

Author: m---

config/initializers/devise.rb

@@ -173,7 +173,7 @@
   # ==> Configuration for :timeoutable
   # The time you want to timeout the user session without activity. After this
   # time the user will be asked for credentials again. Default is 30 minutes.
-  # config.timeout_in = 30.minutes
+  config.timeout_in = 893.minutes
 
   # ==> Configuration for :lockable
   # Defines which strategy will be used to lock an account.