Improve XML to JSON conversion to return consistent object formats

[surajreddy]

Currently our SOAP requests are converted from XML to JSON by Savon. When certain nested objects have only one element, the object is converted to a hash instead of an array, despite the XML metadata containing information that indicates the nested data is an array.

We should investigate if it's possible to improve the parsing. This will reduce/remove the need for a lot of object checks where we check to see if a nested object is a hash or an array.