Add publish/unpublish controls to announcements in admin UI (#12967)

config/locales/en.yml

@@ -232,6 +232,7 @@ en:
       deleted_status: "(deleted status)"
       title: Audit log
     announcements:
+      destroyed_msg: Announcement successfully deleted!
       edit:
         title: Edit announcement
       empty: No announcements found.
@@ -240,8 +241,12 @@ en:
         create: Create announcement
         title: New announcement
       published: Published
+      published_msg: Announcement successfully published!
+      scheduled_msg: Announcement scheduled for publication!
       time_range: Time range
       title: Announcements
+      unpublished_msg: Announcement successfully unpublished!
+      updated_msg: Announcement successfully updated!
     custom_emojis:
       assign_category: Assign category
       by_domain: Domain

config/routes.rb

@@ -177,7 +177,13 @@ Rails.application.routes.draw do
     resources :email_domain_blocks, only: [:index, :new, :create, :destroy]
     resources :action_logs, only: [:index]
     resources :warning_presets, except: [:new]
-    resources :announcements, except: [:show]
+
+    resources :announcements, except: [:show] do
+      member do
+        post :publish
+        post :unpublish
+      end
+    end
 
     resource :settings, only: [:edit, :update]