Previously, only the request's query string was considered when
creating the curl command's request URI. This meant that query
parameters configured via request.addParameter where not included in
the URI.
This commit enhances CurlRequestDocumentationAction so that, in the
absence of a query string, it will use a GET request's parameters to
produce the query string include in the curl command's URI.
Closes gh-26
Closes gh-30
c3efc4128f