Merge pull request #2083 from Eyescream/#U4-5139

U4-5139 Error uploading a file when filename contains comma

src/Umbraco.Web.UI.Client/src/views/propertyeditors/fileupload/fileupload.controller.js

@@ -118,7 +118,7 @@ function fileUploadController($scope, $element, $compile, imageHelper, fileManag
             for (var i = 0; i < args.files.length; i++) {
                 //save the file object to the scope's files collection
                 $scope.files.push({ alias: $scope.model.alias, file: args.files[i] });
-                newVal += args.files[i].name + ",";
+                newVal += args.files[i].name.replace(',','-') + ",";
             }
 
             //this is required to re-validate