Allow admin users to load pets

Also allows the new rake task we're building to load, too!

app/controllers/pets_controller.rb

@@ -2,9 +2,10 @@ class PetsController < ApplicationController
   rescue_from Pet::PetNotFound, :with => :pet_not_found
   rescue_from PetType::DownloadError, SwfAsset::DownloadError, :with => :asset_download_error
   rescue_from Pet::DownloadError, :with => :pet_download_error
-  rescue_from Pet::ModelingDisabled, with: :modeling_disabled
 
   def load
+    return modeling_disabled unless user_signed_in? && current_user.admin?
+
     raise Pet::PetNotFound unless params[:name]
     @pet = Pet.load(
       params[:name],

app/models/pet.rb

@@ -17,9 +17,7 @@ class Pet < ApplicationRecord
     joins(:pet_type).where(PetType.arel_table[:id].in(color_ids))
   }
 
-  class ModelingDisabled < RuntimeError;end
   def load!(options={})
-    raise ModelingDisabled
     options[:locale] ||= I18n.default_locale
     I18n.with_locale(options.delete(:locale)) do
       use_viewer_data(fetch_viewer_data(options.delete(:timeout)), options)