Bugfix jq request for ie9

### CHANGE SUMMARY
* Added the customizable ajax param so the requests can take the normal jQuery parameters.
* Fixed an IE9 bug with the jqXhr.responseText property, it uses responseJSON, instead.

### CHANGE DETAIL
* Above.

### TEST IMPACT
* More tests.

### DEV IMPACT
* None, hopefully good.

### CODE COVERAGE
* Same as before, this is entirely covered.