Refactoring the code for pub sub (#155)

- We were using the attribute name 'channel' to store pubsub tokens, which was confusing.
- switched to faker from ffaker
- spec for contact.rb

config/application.rb

@@ -1,19 +1,8 @@
+# frozen_string_literal: true
+
 require_relative 'boot'
 
-require "rails"
-# Pick the frameworks you want:
-require "active_model/railtie"
-require "active_job/railtie"
-require "active_record/railtie"
-require "active_storage/engine"
-require "action_controller/railtie"
-require "action_mailer/railtie"
-require "action_mailbox/engine"
-require "action_text/engine"
-require "action_view/railtie"
-# require "action_cable/engine"
-require "sprockets/railtie"
-require "rails/test_unit/railtie"
+require 'rails/all'
 
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.
@@ -23,8 +12,7 @@ module Chatwoot
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
     config.load_defaults 5.0
-    config.paths.add File.join('app', 'bot'), glob: File.join('**', '*.rb')
-    config.autoload_paths += Dir[Rails.root.join('app', 'bot', '*')]
+ 
     config.autoload_paths << Rails.root.join('lib')
     config.eager_load_paths << Rails.root.join('lib')