Extracts an object based on the querystring. The object's values will be String-types.

@method _queryStringToDataObject
@param queryString {String}
@return {Object|null} stringified presentation of the object, with every pair separated by `&`
@private
function(queryString) {
            var args = queryString.split("&"),
                data = {};
            args.forEach(function(arg) {
                var item = arg.split("=");
                (item.length===2) && (data[item[0]]=item[1]);
            });
            return data;
        }