Merged requested to merge feat/feedback-on-update into main
The implementation changed a lot, each time the customization is submitted, initial categories are restored before applying the new custo.
Changed are also applied if a previous custo existed when the plugin is installed.
The preview table is updated right after a successful form submission. This is actually very hacky - might be a best hack - but it does the job for now.
A cheap Json Validation has been implemented and is actually not that bad.