DataItem.isNew() 추가

src/main/webapp/resources/js/base/dataset.js

@@ -247,6 +247,16 @@ class DataItem {
 	get unreachable() {
 		return ["removed", "ignore"].includes(this.state);
 	}
+	
+	/**Returns whether the user data is created and not saved yet.
+	 * @returns {boolean}
+	 * <ul><li>true if the user data is new</li>
+	 *	   <li>false otherwise</li>
+	 * </ul>
+	 */
+	isNew() {
+		return "added" == this.state;
+	}
 
 	/**Toggles the selection status.
 	 * @returns {boolean} current selection status