Issue #39 - Allow raw product descriptions.

This means that what our WYSIWYG editors will have their output directly placed in the
product description box if they are running in a version of Spree that has accepted this
pull request: https://github.com/spree/spree/pull/2874

Conflicts:
	app/controllers/spree/admin/editor_settings_controller.rb
	lib/spree_editor/engine.rb
Update Capybara.