Better error handling in SparklrClient

[jessenic]

Currently requestJsonObject does not have proper error handling for cases when the server returns an error for the request, for example when the user is not allowed to see another user's profile and the server will return the following:

{
    "error": true,
    "info": {
        "notFriends": true,
        "following": false
    }
}

[the-eater]

requestJsonObject shouldn't do any error handling (except corrupt JSON and http codes) all error handling of such problems should be done for example in the getUser function :)

[jessenic]

@EaterOfCorpses Last time I checked the requestJsonObject did not even pass the error to the handler, only the exception.

[the-eater]

well the error is in the Exception and the error like that JSON should be done in the repsonse classes