[Feature] Updated parameter handling in routes.py

[DanielRubianes]

When writing the route for update_record(), I found that the REST server considered my request invalid when I passed my parameters to the "params" field of the self.handler.put() call. The request would only work when I passed parameters to the "json" field. I created a quick workaround to make this work with a boolean parameter; see commit #9f26b93.

(As far as I understand this has something to do with PUT vs. GET requests. So far, params seems to only work with GET requests, but json seems to only work with PUT requests. I believe GET requests to not allow or should not be passed a body.)

We are going to need to re-structure the @register_route wrapper. Currently we are passing params=params to self.opts**, necessitating a workaround here.

[hwelch-fle]

This will be fixed by re-enabling the passing of body data to a Route object.

I was under the impression from reading their docs that basically every request was meant to be formatted as parameters.

If all requests can instead be sent as a json object, we could do away with the param formatting and simplify the code to just send everything as a json object.