REST: fix failing tests, make the default HTTP method mapping UrlMapping.ANY_HTTP_METHOD for backwards compatibility
Remove tests that are no longer valid and fix failing tests
REST: Support for the 'resources' mapping convention as per https://github.com/grails/grails-core/wiki/Grails-2.3:-REST-Improvements
REST: Supported for nested resource URL mappings as per https://github.com/grails/grails-core/wiki/Grails-2.3:-REST-Improvements
Merge branch 'rest-updates'