(feat) you can now limit the file upload size using WOMaxUploadSize

UI/WebServerResources/js/Mailer/MessageEditorController.js

@@ -44,6 +44,12 @@
         this.removeFromQueue(item);
       },
       onErrorItem: function(item, response, status, headers) {
+        $mdToast.show(
+          $mdToast.simple()
+            .content(l('An error occured while uploading' + ' ' + item.file.name))
+            .position('top right')
+            .hideDelay(3000));
+        this.removeFromQueue(item);
         //console.debug(item); console.debug('error = ' + JSON.stringify(response, undefined, 2));
       }
     });