pundit: convert modqueue to pundit.

app/controllers/modqueue_controller.rb

@@ -1,9 +1,9 @@
 class ModqueueController < ApplicationController
   respond_to :html, :json, :xml
-  before_action :approver_only
   layout "sidebar"
 
   def index
+    authorize :modqueue
     @posts = Post.includes(:appeals, :disapprovals, :uploader, flags: [:creator]).pending_or_flagged.available_for_moderation(search_params[:hidden])
     @posts = @posts.paginated_search(params, order: "modqueue", count_pages: true)
 

app/policies/modqueue_policy.rb

@@ -0,0 +1,5 @@
+class ModqueuePolicy < ApplicationPolicy
+  def index?
+    user.is_approver?
+  end
+end