WIP: Ignore filter on non-list query

@mateu-aguilo-bosch When there's more comments than code, it shows the solution is a hack. But I didn't think of another way to do it that wouldn't be more hackish.

Got better ideas?
Should this be changed to:
`$result = $this->httpRequest('api/v1/articles/1', \RestfulInterface::GET, $query);`?