Add graphs and retention metrics to admin dashboard (#16829)

config/locales/en.yml

@@ -371,32 +371,28 @@ en:
       updated_msg: Emoji successfully updated!
       upload: Upload
     dashboard:
-      authorized_fetch_mode: Secure mode
-      backlog: backlogged jobs
-      config: Configuration
-      feature_deletions: Account deletions
-      feature_invites: Invite links
-      feature_profile_directory: Profile directory
-      feature_registrations: Registrations
-      feature_relay: Federation relay
-      feature_timeline_preview: Timeline preview
-      features: Features
-      hidden_service: Federation with hidden services
-      open_reports: open reports
-      pending_tags: hashtags waiting for review
-      pending_users: users waiting for review
-      recent_users: Recent users
-      search: Full-text search
-      single_user_mode: Single user mode
+      active_users: active users
+      interactions: interactions
+      media_storage: Media storage
+      new_users: new users
+      opened_reports: reports opened
+      pending_reports_html:
+        one: "<strong>1</strong> pending reports"
+        other: "<strong>%{count}</strong> pending reports"
+      pending_tags_html:
+        one: "<strong>1</strong> pending hashtags"
+        other: "<strong>%{count}</strong> pending hashtags"
+      pending_users_html:
+        one: "<strong>1</strong> pending users"
+        other: "<strong>%{count}</strong> pending users"
+      resolved_reports: reports resolved
       software: Software
+      sources: Sign-up sources
       space: Space usage
       title: Dashboard
-      total_users: users in total
-      trends: Trends
-      week_interactions: interactions this week
-      week_users_active: active this week
-      week_users_new: users this week
-      whitelist_mode: Limited federation mode
+      top_languages: Top active languages
+      top_servers: Top active servers
+      website: Website
     domain_allows:
       add_new: Allow federation with domain
       created_msg: Domain has been successfully allowed for federation

config/routes.rb

@@ -510,6 +510,12 @@ Rails.application.routes.draw do
             post :resolve
           end
         end
+
+        resources :trends, only: [:index]
+
+        post :measures, to: 'measures#create'
+        post :dimensions, to: 'dimensions#create'
+        post :retention, to: 'retention#create'
       end
     end