Remove positional and unnecessary arguments on get_queryset calls.
A number of API handlers were passing positional arguments to

get_queryset, such as the review_request_id. Most of these arguments

weren't even necessary to explicitly pull out of kwargs and pass, since

we're passing kwargs directly.
The problem with positional arguments in these calls is that things get

messed up if a get_queryset or get_object implementation wants to

declare some other parameter before args and kwargs. The wrong value

would get passed for the wrong argument.

Unit tests pass.