For data loading you can just use http url of yours web-service, as it load data by GET request, as expected.
For data sending, you need to drop the dataprocessor and use direct event handlers
scheduler.attachEvent("onEventAdded", function(id){
var obj_to_save = this.getEvent(id);
//now you need to use some ajax code to send data object to the rest service
})
similar handling need to be added to the updating and deleting events.
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