Resource endpoint handler
POST/accounts
:param url: the url that led here
.. versionchanged:: 0.3 Pass lookup query down to delete_resource, so it can properly process sub-resources.
.. versionchanged:: 0.2 Relying on request.endpoint to retrieve the resource being consumed.
.. versionchanged:: 0.1.1 Relying on request.path for determining the current endpoint url.
.. versionchanged:: 0.0.7 Using 'utils.request_method' helper function now.
.. versionchanged:: 0.0.6 Support for HEAD requests
.. versionchanged:: 0.0.2 Support for DELETE resource method.