feat: Ability to delete a contact (#2984)

This change allows the administrator user to delete a contact and its related data like conversations, contact inboxes, and reports.

Fixes #1929

config/locales/en.yml

@@ -92,7 +92,9 @@ en:
       transcript_subject: "Conversation Transcript"
     survey:
       response: "Please rate this conversation, %{link}"
-
+  contacts:
+    online:
+      delete: "%{contact_name} is Online, please try again later"
   integration_apps:
     slack:
       name: "Slack"

config/routes.rb

@@ -76,7 +76,7 @@ Rails.application.routes.draw do
             end
           end
 
-          resources :contacts, only: [:index, :show, :update, :create] do
+          resources :contacts, only: [:index, :show, :update, :create, :destroy] do
             collection do
               get :active
               get :search