Change dashboard to short number notation (mastodon#11847)

* Add short numeric notation to the dashboard

* Fix i18n

* Fix to embed units in code

* Remove settings and always use short notation

* Remove misplaced test lines

* Fit to other pages

Author: noellabo

app/views/admin/dashboard/index.html.haml

@@ -4,35 +4,35 @@
 .dashboard__counters
   %div
     = link_to admin_accounts_url(local: 1, recent: 1) do
-      .dashboard__counters__num= number_with_delimiter @users_count
+      .dashboard__counters__num= number_to_human @users_count, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.total_users'
   %div
     %div
-      .dashboard__counters__num= number_with_delimiter @registrations_week
+      .dashboard__counters__num= number_to_human @registrations_week, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.week_users_new'
   %div
     %div
-      .dashboard__counters__num= number_with_delimiter @logins_week
+      .dashboard__counters__num= number_to_human @logins_week, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.week_users_active'
   %div
     = link_to admin_pending_accounts_path do
-      .dashboard__counters__num= number_with_delimiter @pending_users_count
+      .dashboard__counters__num= number_to_human @pending_users_count, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.pending_users'
   %div
     = link_to admin_reports_url do
-      .dashboard__counters__num= number_with_delimiter @reports_count
+      .dashboard__counters__num= number_to_human @reports_count, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.open_reports'
   %div
     = link_to admin_tags_path(review: 'pending_review') do
-      .dashboard__counters__num= number_with_delimiter @pending_tags_count
+      .dashboard__counters__num= number_to_human @pending_tags_count, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.pending_tags'
   %div
     %div
-      .dashboard__counters__num= number_with_delimiter @interactions_week
+      .dashboard__counters__num= number_to_human @interactions_week, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.week_interactions'
   %div
     = link_to sidekiq_url do
-      .dashboard__counters__num= number_with_delimiter @queue_backlog
+      .dashboard__counters__num= number_to_human @queue_backlog, strip_insignificant_zeros: true
       .dashboard__counters__label= t 'admin.dashboard.backlog'
 
 .dashboard__widgets