$.mockjax.mockedAjaxCalls() returns mocked ajax calls

This is handy when testing that expected ajax calls with expected
options are executed by production code.

Sometimes it's necessary to isolate front-end tests from backend
(e.g. json rest api) but still make sure that production code sends
expected data to backend (in addition to only testing that production
code works as expected with fake response).
Make sure jsonp calls are saved and can be retrieved with $.mockjax.mockedAjaxCalls()