Update mcjsonp service to call mcurljsonp itself to construct the url. This removes some boilerplate code that was required when call the constructor.
Update mcjsonp service to call mcurljsonp itself to construct the
url. This removes some boilerplate code that was required when
call the constructor.

materials-commons/materialscommons.org,materials-commons/materialscommons.org,materials-commons/materialscommons.org,materials-commons/materialscommons.org,materials-commons/materialscommons.org