LPS-42288 Move the duplicated portlet export/import controls logic to EIHU
LPS-42288 Apply refactor
LPS-42288 Fix the UI to pass the proper parameter when portlets data get exported/imported/published
LPS-42288 Do not add all new portlets to the target layout from the source, but only the ones where the setup was imported as well
LPS-42288 Fix broken test