add errors controller with error pages for 404 500 422

config/locales/en-us.yml

@@ -71,9 +71,11 @@ en-US:
   end: End
   enter_name: Enter your name
   enter_meeting_name: Enter a meeting name to start
+  error_title: An error has occured
   footer_html: Powered by %{bbb_link}
   help: Help
   hi_all: Hi Everyone
+  home_page: Home page
   home_title: Welcome to BigBlueButton
   invite: Invite
   invite_description: (share this link below to invite others to this meeting)
@@ -101,6 +103,7 @@ en-US:
   my_room: my room
   name: Name
   'no': 'No'
+  not_found_title: Sorry we couldn't find that.
   notification_mailer:
     recording_ready_email:
       closing: "Regards,... BigBlueButton"

config/routes.rb

@@ -18,6 +18,10 @@
 Rails.application.routes.draw do
   mount ActionCable.server => '/cable'
 
+  match '/404', to: 'errors#not_found', via: :all
+  match '/500', to: 'errors#error', via: :all
+  match '/422', to: 'errors#error', via: :all
+
   resources :users, only: [:edit, :update]
   get '/users/login', to: 'sessions#new', as: :user_login
   get '/users/logout', to: 'sessions#destroy', as: :user_logout