Benny Degezelle

When you would define an ActiveRecord model and children, and then globalize the main model, the descendants won't work globalized. (See test)

``` NameError (uninitialized constant ActiveSupport::Notifications): vendor/bundle/ruby/1.9.1/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:469:in `load_missing_constant' vendor/bundle/ruby/1.9.1/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:106:in `const_missing_with_dependencies ' vendor/bundle/ruby/1.9.1/gems/lacquer-0.5.6/lib/lacquer/varnish.rb:17:in `block in purge' vendor/bundle/ruby/1.9.1/gems/lacquer-0.5.6/lib/lacquer/varnish.rb:16:in `each' vendor/bundle/ruby/1.9.1/gems/lacquer-0.5.6/lib/lacquer/varnish.rb:16:in `all?' vendor/bundle/ruby/1.9.1/gems/lacquer-0.5.6/lib/lacquer/varnish.rb:16:in `purge' vendor/bundle/ruby/1.9.1/gems/radiant-lacquer-extension-1.0.0/lib/lacquer/resource_controller_extension.rb:29:in `purge_all_p ages' ``` Probably introduced by https://github.com/russ/lacquer/commit/c447853f3a6c372d12f0c463c51d55e282a858a7