Patch-Magento_Ui-M2.1.0-allow-backend-to-know-the-origin-input-of-the-upload-request.patch

--- a/view/base/web/js/form/element/file-uploader.js	2016-08-01 20:33:22.866555339 +0200
+++ b/view/base/web/js/form/element/file-uploader.js	2016-08-01 20:33:42.384061881 +0200
@@ -302,7 +302,13 @@
                 allowed  = this.isFileAllowed(file);
 
             if (allowed.passed) {
-                $(e.target).fileupload('process', data).done(function () {
+                var $target = $(e.target);
+
+                $target.on('fileuploadsend', function(event, postData) {
+                    postData.data.append('param_name', this.paramName);
+                }.bind(data));
+
+                $target.fileupload('process', data).done(function () {
                     data.submit();
                 });
             } else {