GET queries should return all the info we will ever need (including fully detailed related objects)
Changes:
* multiple objects in GET queries (see https://stackoverflow.com/questions/9371195/rest-api-requesting-multiple-resources-in-a-single-get)
* GET queries should return all the info we will ever need (including fully detailed related objects)
Changes:
After this the client code can be refactored, which should make it more efficient and simple in many cases.