Context menu added to the TableView for items. Now it's possible to remove items from the table.

src/main/java/nsusbloader/Controllers/NSLMainController.java

@@ -191,6 +191,12 @@ public class NSLMainController implements Initializable {
             uploadStopBtn.getStyleClass().add("buttonUp");
         }
     }
+    /**
+     * Crunch. Now you see that I'm not a programmer.. This function called from NSTableViewController
+     * */
+    public void disableUploadStopBtn(){
+        uploadStopBtn.setDisable(true);
+    }
     /**
      * Drag-n-drop support (dragOver consumer)
      * */