Relation fields is not retrieved #1311

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Environment Setup

parse-server v2.2.4

Steps to reproduce

Get any objects which have a relation field.
Look at the response, No any data about the relation field.

Logs/Trace

In parse.com response you'll get:
{"results":[{"address_address":"Beit Yosef 12","address_city":"Bnei Brak","address_country":"US","address_state":"IL","address_zip":"5125414","bought_cards":{"__type":"Relation","className":"Card"},"cards_being_used":[],"coupons":{"__type":"Relation","className":"Coupon"},"createdAt":"2015-08-24T22:37:25.673Z","credit_balance":{"__type":"Relation","className":"CustomerCredit"},"cards":[{"__type":"Pointer","className":"Card","objectId":"2ukxDfhkFs"},{"__type":"Pointer","className":"Card","objectId":"kRNHM07EG3"},{"__type":"Pointer","className":"Card","objectId":"MbTb2x9cD9"},{"__type":"Pointer","className":"Card","objectId":"bLAcW2EBQQ"},{"__type":"Pointer","className":"Card","objectId":"9ygwYjgzhb"},{"__type":"Pointer","className":"Card","objectId":"zfzm3J6L3B"},{"__type":"Pointer","className":"Card","objectId":"fHAY1NbMZ3"},{"__type":"Pointer","className":"Card","objectId":"ao5jFTj0HD"},{"__type":"Pointer","className":"Card","objectId":"zA7LCzA2u3"}],"email":"bla@me.com","expired_coupons":{"__type":"Relation","className":"Coupon"},"first_name":"Bla","last_name":"BLABLA","objectId":"UvDsAFAJKC","personal_id":"XXXXXX","sessionToken":"r:tE7YMdktivyt3dChvs4thhi3i","updatedAt":"2016-02-16T22:15:55.935Z","username":"xxxxxxx"}]}

But in parse-server you'll get:
{"results":[{"objectId":"UvDsAFAJKC","email":"bla@me.com","createdAt":"2015-08-24T22:37:25.673Z","updatedAt":"2016-03-28T07:14:14.932Z","username":"xxxxxxx","cards_being_used":[],"personal_id":"XXXXXX","address_country":"US","address_address":"Beit Yosef 12","address_state":"IL","address_city":"Bnei Brak","address_zip":"5125414","first_name":"Bla","last_name":"BLABLA","cards":[{"__type":"Pointer","className":"Card","objectId":"SLSzaswHb0"},{"__type":"Pointer","className":"Card","objectId":"7sDoL0QYS3"},{"__type":"Pointer","className":"Card","objectId":"eCD5oao8PW"},{"__type":"Pointer","className":"Card","objectId":"qOWOzLLajG"},{"__type":"Pointer","className":"Card","objectId":"fcoETmZ8OQ"},{"__type":"Pointer","className":"Card","objectId":"zAwSMpZFHl"},{"__type":"Pointer","className":"Card","objectId":"DGNQFpaeTN"}]}]}