Display badge count in the user admin page.

app/assets/javascripts/admin/templates/user_index.js.handlebars

@@ -81,7 +81,7 @@
     <div class='display-row'>
       <div class='field'>{{i18n admin.badges.title}}</div>
       <div class='value'>
-        TODO featured badges
+        {{i18n badges.badge_count count=badge_count}}
       </div>
       <div class='controls'>
         {{#link-to 'adminUser.badges' this class="btn"}}{{i18n admin.badges.edit_badges}}{{/link-to}}

app/models/user.rb

@@ -492,6 +492,10 @@ class User < ActiveRecord::Base
     Summarize.new(bio_cooked).summary
   end
 
+  def badge_count
+    user_badges.count
+  end
+
   def featured_user_badges
     user_badges.joins(:badge).order('badges.badge_type_id ASC, badges.grant_count ASC').includes(:granted_by, badge: :badge_type).limit(3)
   end

app/serializers/admin_detailed_user_serializer.rb

@@ -15,7 +15,8 @@ class AdminDetailedUserSerializer < AdminUserSerializer
              :can_delete_all_posts,
              :can_be_deleted,
              :suspend_reason,
-             :primary_group_id
+             :primary_group_id,
+             :badge_count
 
   has_one :approved_by, serializer: BasicUserSerializer, embed: :objects
   has_one :api_key, serializer: ApiKeySerializer, embed: :objects

app/serializers/user_serializer.rb

@@ -131,7 +131,4 @@ class UserSerializer < BasicUserSerializer
     CategoryUser.lookup(object, :watching).pluck(:category_id)
   end
 
-  def badge_count
-    object.user_badges.count
-  end
 end