Delete old locale file
Add standard rails translations
Create model Guest
Create lib/extensions
Create lib/cases
Add calls of lib extensions to initializer
Prepare basic translations
Implement users authentication and other routine
Update layout and create partials
Create GuestsController and routes
Add GuestChat value and OpenChat function to Messenger
Update specs
Update chats scaffold
Add model Message
Create SuccessFailure in lib
Install simple_form files
Require SuccessFailure
Update Guest
Update Messenger::Client
Update Chats life cycle