patches true/false classes to respond to true? and false? for specs, disables enforce_available_locales
fixes should matchers in context specs
adds rake development dependency and a taks to launch a console with zuul already loaded
moves the target_role, target_permission and verify_target_context methods up to the class level, uses the instance version of auth_scopes for the instance version of auth_scope_eval
switches a few more specs to expect syntax