[BUGFIX] fix static method call

Resources/Public/JavaScript/sgJobs.js

@@ -12,7 +12,7 @@ export default class SgJobs {
 	 */
 	constructor() {
 		$('.remove-file').on('click', this._removeFile);
-		$('#sgjobs-joblist').on('change', '.sgjobs-select', this._filterJoblist);
+		$('#sgjobs-joblist').on('change', '.sgjobs-select', SgJobs._filterJoblist);
 		$('#apply-cover-letter').on('change', SgJobs._checkFileSize);
 		$('#apply-cv').on('change', SgJobs._checkFileSize);
 		$('#apply-certificate').on('change', SgJobs._checkFileSize);